Interventional insulation for timber which one to choose: choose jute for timber. How to choose interventional insulation for a house made of timber or logs

A wooden house differs from buildings made of other materials by its environmental friendliness and pleasant microclimate. Such characteristics are achieved with the correct construction and arrangement of thermal insulation. To do this, use interventional insulation for timber.

When a house is built from logs or beams, gaps and gaps between the parts are formed to a greater or lesser extent. These shortcomings lead to the fact that cold air flows, atmospheric moisture and other negative influences penetrate into the premises. Mezhventsovy sealant closes cracks and gaps.

In addition, it also performs the following functions:

1. Insulation - keeps the heat inside the premises.
2. Natural ventilation. Materials that are used as interventional insulation easily absorb moisture from rooms and at the same time quickly release it into the environment. Therefore, in such a house it is comfortable to stay both in winter and in summer.
3. Fills the gaps that are formed during the drying of the wood.
4. Protects the joints of logs from moisture, which prolongs the life of the entire structure.

Given the functions that the sealant performs, mainly natural materials are chosen. Some of them have been used for many decades.

But modern technologies dictate their terms and synthetic substitutes have appeared on the market. Most professional builders do not trust artificial materials and continue to use "grandfather" technologies.

Natural interventional heaters

Natural sealants are suitable for log buildings, since their properties are as close as possible to wood. Materials are able to pass moisture from the premises to the outside, which allows you to maintain a pleasant microclimate.

Natural heaters include:

• jute;
• wool;
• tow.

To determine which interventional insulation is better, you need to take a closer look at the technical characteristics of each of them.

Linen for insulation of timber rims

One of the old, but still popular methods of warming wooden houses. Suitable for buildings made of rounded or chopped logs, glued or profiled timber. It is applied in the form of felt. Long cleaned fibers are combed, pressed, and a web is created, which is cut into strips of different thicknesses. Going for a purchase, they determine the size in advance.

The material is affordable and perfectly performs protective functions. In addition, it is environmentally friendly. It is laid in the process of building a house along a log. The edges should hang down a little, and at the end of the construction work, the sagging part is caulked.

Moss as interventional insulation

For such a case, sphagnum moss or cuckoo flax is better suited. Materials gained popularity due to availability. Moss is mined in forests and swamps where it grows in its natural environment. Therefore, there is no need to spend large sums to purchase a heater.

But this is not the only advantage of moss:

1. Possesses property of absorption and return of moisture.
2. Reliably closes gaps between logs.
3. Keeps heat indoors.
4. Can be used for caulking gaps after lumber has dried.

But there are several disadvantages:

1. Birds like to use material for building nests, so it must be hidden from their eyes.
2. Moss, when laying, should be wet. Dry - crumbles and loses its properties, and wet - will cause the wood to rot.
3. The heater is highly flammable.

Moss is laid during the construction of the main structure, across the log and in large quantities, ramming it.

jute insulation

More modern, but still natural material. Does not contain polypropylene impurities. They are made from the fibers of a certain tree species that grow in Africa, Asia, and America. This is a good interventional insulation for glued laminated timber and other wooden buildings. Conveniently fits, there is no need to leave pieces that will hang down.

The dense structure allows you to completely close the gaps. Resists sudden changes in ambient temperature. Possesses vapor-permeable properties. Jute material has a long service life.

Sheep wool (felt)

This is an expensive material, because it is rarely used to insulate a log house. It is difficult to find domestic material in construction stores, this is an assortment of only foreign manufacturers.

Wool retains heat and tightly closes the gaps. Absorbs moisture, but gives off much harder. Manufacturers coped with this shortcoming by adding specific components to the composition. Substances also fight the development of fungus and mold in the insulation.

Insulation - tow

This interventional insulation is made from jute or flax. Materials differ in density and price. Jute tow is cheaper, denser and tougher. Linen - a little more expensive, but softer.

The material for the insulation of wooden houses is rarely used, since it is more prone to decay than other materials. In addition, birds use it to build nests and during the construction of a house, they constantly steal material. It is better to use tow as a heater for wooden doors, windows, balconies.

Synthetic insulation

Some people think that it is better to choose an artificial material for warming a house from a bar or log. This option is more convenient and faster. It is much easier to work with sealant, polyurethane foam than with jute or moss.

But synthetic insulation is not able to let moisture out of the room, which provokes the development of mold, and therefore reduces the service life and worsens the microclimate. Porous materials, although they absorb steam, are unable to completely close cracks and gaps, which leads to heat loss.

But still, some builders and home owners choose the following materials for warming the interventional space:

• Mineral wool.
• Izover.
• Polyurethane.
• Polyterm.

Now let's consider whether such options are suitable, and what the consequences will be after using them.

Mineral wool

As a heater for the facade, this material is perfect for a timber structure, but it is better not to use it for interventional space. The material quickly absorbs moisture, but is unable to give it to the outside. During shrinkage, the logs compress the mineral wool, which leads to a decrease in thermal insulation properties.

Isover

Despite the large number of advantages, isover is rarely used as a heater. The positives include:

1. Fire safety (not lit).
2. Convenient to work.
3. Completely fills gaps.
4. Doesn't rot.
5. Birds are indifferent to such material.

But one serious drawback does not allow it to become a popular and sought-after insulation. When damaged, dust is released from the material in the form of small needles that irritate the respiratory tract and mucous membranes. It is hazardous to human health. In addition, the isover accumulates a lot of moisture and is unable to give it away.

Polyurethane foam

An excellent building material, which is chosen for the following characteristics:

• Well seals joints and corners.
• Holds the elements together.
• Some species are safe for buildings and humans (does not burn and does not emit caustic substances).

But for wooden houses it is not suitable for the following reasons:

• Lack of plasticity after solidification. The tree is constantly changing size, albeit slightly. Polyurethane foam cannot adapt to such changes, therefore microcracks appear on the surface of the walls. Moisture gets into them, and gradually destroys the frame of the structure.
• Afraid of low temperatures. After thawing, it starts to crumble.
• Under the influence of sunlight loses its strength.
• Two-component foams are dangerous to human life and health. Easily flammable and emit toxic substances.

Polyterm

This material is similar to synthetic winterizer. It differs:

• Resistant to low temperatures.
• Long service life.
• Not flammability.
• Inert to the effects of fungi and mold.
• Possibility of reuse.
• The ability to restore shape after prolonged compression.

But polyterm is categorically not suitable for houses built from logs or timber. This synthetic material is not able to pass air and absorb moisture. Such shortcomings are quite enough to abandon the heater.

But that is not all. If it happens that the half-term gets wet, it will take a very long time to dry, which means that the tree that comes into contact with the sealant will begin to rot.

What material is best suited for timber, logs?

In order for a wooden house to retain its properties, it is better to choose natural materials for insulation and sealing of the interventional space. These heaters will not become an obstacle to the release of steam from their premises and moisture from the log itself. While synthetic materials, on the contrary, do not release fumes.

The use of such heaters leads to additional costs:

1. Installation of a forced ventilation system.
2. Frequent repairs.
3. Increasing heating costs to dry the walls from the inside.

Do-it-yourself installation of interventional insulation

Any of the selected natural insulation is laid according to the same principle. The material is spread along the logs around the entire perimeter of the house. In order to fix the laid layer, a stapler is used. So, they are protected from slipping or blowing away by the wind.

A new log is laid on top, which should press the insulation. It is important to place the material so that it hangs down after laying the tree by 5 cm on both sides. Therefore, even before the start of construction, they measure glued beams or logs and buy insulation 10 cm wider.

After the house is erected, the hanging sections must be caulked with a chisel. This is the primary caulk. And after a year and a half, you need to perform a second one, since during this time the wood naturally dries and the insulation shrinks. A house that is protected from external influences will, if not prettier, then look like it was built recently.

How much does insulation material cost?

Save on insulation is not worth it. If the material is not laid tightly enough, chamber gaps will appear through which heat escapes into the external environment, and cold air enters from there. As mentioned above, it is better to use only natural materials to insulate houses made of logs and beams, so let's get acquainted with their cost:

• moss can be collected in the nearest forest, then the costs will be minimal, or you can buy a bag for 280 rubles;
• flax can be bought from 3.5 rubles per linear meter up to 60;
• jute will cost from 7 to 100 rubles per linear meter;
• wool - from 34 rubles per linear meter;
• tow - from 430 rubles per roll of 4 kg.

You need to understand that such a spread in price is obtained due to the different thickness and width of the material.

Interventional insulation is one of the important elements of a wooden structure. Which interventional insulation you choose will determine the microclimate in your wooden house. For effective and environmentally friendly thermal insulation of a wooden house or a bath, it is best to use the THERMOFIBER interventional insulation.

The main advantages of interventional insulation

Firstly, this interventional insulation is made from hollow polyester fibers, which are 5 times thinner than natural jute or flax fibers.

At the same time, the material is absolutely vapor-permeable (your house breathes).

Secondly, the material is environmentally friendly for humans and the environment.

Thirdly, interventional insulation does not absorb moisture, this is one of the important indicators, since raw insulation cannot be a good heat insulator.

Fourthly, due to the elasticity of hollow fibers (the fibers do not break like jute or flax), the material restores thickness from full compression to 90%.

For example, THERMOFIBER, thickness 20 mm, density 300 gr., will shrink under load up to 1 mm and straighten evenly filling the gap or cavity between the beam or log up to 18 mm, thereby eliminating blowing and providing reliable thermal insulation.

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Videos interventional insulation

The use of interventional insulation

For interventional insulation of profiled or glued beams, the interventional insulation THERMOFIBER 15 mm thick is used.

Interventional insulation for timber: an excellent material for wooden housing construction

Laying interventional insulation is made in the profile of the timber. At the same time, a material with a thickness of 15 mm will shrink under a load of up to 1 mm and restore the thickness by 90%, while not preventing shrinkage of the entire structure.

For interventional insulation of rounded or chopped logs, the interventional insulation THERMOFIBER 20 mm thick is used and fits the width of the moon groove with or without a hem (at the request of the client), the interventional insulation of 20 mm will shrink under load to 1 mm and restore the thickness by 90% while not will prevent shrinkage of the entire structure.

How much does interventional insulation save

The interventional insulation THERMOFIBER can really save up to 100,000 rubles and these are not empty words.

For example, your log house is 5x10 m, two-story, wall height is 5.7 m, a log of 240 mm is used, 24 crowns. The perimeter of the first crown is 30 linear meters ((5 + 10) * 2 \u003d 30), the total perimeter of the house is 720 linear meters (30 * 24 crowns).

The cost of caulking a log house is 70 rubles / linear meter (prices of 2017), caulking is made on both sides, the total cost of the work alone is 100,800 rubles (70 * 2 * 720). You may need to caulk every year as the jute or moss is pecked out by birds. Summing up, THERMOFIBER saves 100 800 rubles.

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jute flaws

As long-term practice shows, jute or linen are NOT good and durable interventional insulation for a wooden house or bath.

They have a number of disadvantages, which indicate that these materials cannot be used as interventional insulation for logs and timber.

Firstly, jute or linen absorb moisture very strongly. That is, at 100% humidity, jute will absorb 30%, while it dries very slowly (from 2 to 4 days). That is why, jute (linen) was chosen as a material for making burlap for the transportation of bulk goods such as sugar, rice, sand.

But this quality of the material suggests that jute does not allow moisture to pass through, and not that it is a good heat insulator. Since the wet material loses all its properties.

Secondly, many builders believe that jute or linen do not rot due to the high resin content in these materials. This is a direct delusion, jute or flax rot and create a favorable environment for the development of fungi and microorganisms, since it is a natural material.

You yourself can conduct a simple experiment, take two wet boards (of natural humidity) and lay jute or linen between them and leave it indoors under pressure for 1-2 weeks. Then open it and see what you got.

And in conclusion, your builder makes money on the caulk of a log house, if jute or linen is chosen as an interventional insulation.

jute rots

These photographs were taken at the sites where wooden houses were built.

As can be seen from the photographs, the jute has already begun to degrade the wood, although the log cabins are still under construction. The rotting of jute or flax is due to its natural origin, that is, there are a lot of microorganisms in jute, which, when they enter a humid environment (and wood has a moisture content of 30-40%), begin to multiply instantly creating favorable conditions for the development of various fungi that immediately begin to infect the tree .

And if the external manifestation of the fungus can be fought (cleaned, sanded, painted), then how to deal with the fungus, which has already formed in the interventional grooves.

And remembering such a quality of jute (flax) as hydrophobicity (moisture absorption), then the fungi will receive constant nourishment and their population in the grooves of the log house will only grow.

And it’s not even scary that the wood will begin to collapse, but that the fungi multiplying produce spores that can cause various allergic diseases.

Articles about interventional insulation

Jute and jute fiber characteristics and disadvantages

What thickness of jute insulation is better to insulate a house from a bar?

Timber houses are different. There are houses made of glued and planed profiled timber and there are wooden houses made of ordinary sawn (unplaned) timber.

Accordingly, each type of timber is recommended to have its own interventional insulation made of jute. For example, the walls of a house made of glued and planed timber have fairly clear parameters and are of better quality in execution. Mezhventsovye grooves in the walls of such wooden houses, as a rule, are minimal. In this case, interventional jute with a thickness of 5-6 mm with laying in one layer can be recommended.

In rare cases, in the terms of reference for the assembly of such walls, an insulation with a thickness of 8-10 mm is indicated. The width of the tape in these cases depends on the width laid down by the designers in the interventional groove.

A photo: construction in the Moscow region of a cottage village with houses made of timber of natural moisture.

For houses made of ordinary unplaned sawn timber, the minimum thickness of interventional insulation in the region of 8 mm is recommended.

This option is often used: a jute tape 5-6 mm thick is taken and laid with a hem on one or two sides. Thus, in the edge places of the timber with crowns, the thickness of the interventional jute tape is 10-12 mm.

The nuances of choosing interventional materials

In wooden houses from ordinary sawn timber, in addition to the importance of selecting interventional insulation in terms of thickness, the correct installation of the dowel in the timber wall and its quality is very important.

So that the sawn timber of natural moisture does not spin, it is very important to install round wooden dowels in the timber in a checkerboard pattern with an interval of at least one and a half meters.

Advantages of interventional insulation made of jute for timber

The choice of interventional insulation is a complex and responsible process, especially when it comes to such a structure as a bathhouse.

She is simply obliged to keep heat well, therefore, a serious responsibility falls on the heater, which, of course, must be dealt with. In this regard, I would like to note interventional insulation made of jute, which is preferred by many experts, calling it the best option in terms of price-quality ratio.

Before starting a story about its benefits, let's draw your attention to the fact that we are talking about a heater made from a natural material - the fibers of an annual jute plant that grows in Southeast Asia, China and Kazakhstan.

The price for such interventional insulation is not high, but this is not its main advantage, especially if you are talking about warming a bath. The fact is that jute is very strong and resistant to decay. That is why it is used for sewing bags for storing various crops.

Advantages of choosing materials for timber

But the most important thing is that jute is able to stay dry.

Even if the relative humidity, let's say, around it, is 80%! Agree, this material is indispensable for a bath, and therefore it is actively used for warming buildings made of timber, rounded logs, frame-panel structures. Why did we mention wooden construction options? The fact is that jute is ideal for wood in terms of its technical characteristics.

Watch a thematic video on choosing interventional insulation for timber:

In particular, we are talking about the capillary structure of the fibers, low thermal conductivity, excellent natural ventilation.

In addition, jute insulation has a high surface density, and this indicator is achieved not like in many synthetic materials, by the method of chemical gluing, but thanks to the so-called technique.

Choosing interventional insulation for a wooden house

needle punch. What does it say? The fact that such a heater is durable, and also absolutely safe from the point of view of ecology. The last nuance is important, the heater for the bath will be regularly exposed to high temperatures, therefore, in this case it should not emit fumes harmful to human health.

Question answer

We publish a typical question of a buyer from the region of the Russian Federation and our answer:

Buyer Message:
I need jute thickness 8-10 mm 800 m (100 mm) 800 m (150 mm) and 160 m (20 mm) and delivery to Kaluga

Our answer:
Then, if you are an individual, and not an individual entrepreneur or LLC, then you will need to pay for the goods on our SBERBANK card by Monday - November 7th.

In case of your payment before November 7, we will send you the agreed interventional insulation to you - according to the details that you give us after payment.

If you agree, then write a confirmation, we will send you a card number to pay for the goods.

Conclusion

When choosing high-quality gasketing interventional materials for a house made of timber, we advise you to get qualified advice from our company. Phones for consultations on the choice of interventional insulation for timber are indicated in the "header" of our website and in the section contacts.

The use of interplanetary sealant in the construction of a house from profiled beams

In this article, we review and compare the options for using cross-industry sealants in the construction of houses from profiled beams.

One of the characteristics of the operation of wooden houses (including houses made of profiled beams) is that, under the influence of environmental conditions, the elements of wooden structures can change their geometry to some extent.

This leads to the creation of a gap between the structural elements of the wall and, consequently, reduces the thermal insulation properties of such a structure.

Therefore, in practice, the construction of wooden houses has become a widespread use of various interplanetary seals.

It should be noted that in the construction of houses from profiled beams, the use of interlaced spacers is due to the properties of the upper and lower surfaces of the beam. In this regard, the main possibilities for using alternating sealing materials in the construction of houses from profiled beams:

1. Use of jute and ginatin fillings.
   This option is traditional for wooden housing construction, but when building a profiled beam with a “main” profile (Fig.

   1) the use of jute and lornokin strips is difficult because

   How to choose an intervention house thermal insulator

   Beam profiles do not have large holes for sealing tape. For this profile, these seals can be used up to 3 mm. In this case, they do not have the properties of filling the slots between the crowns, the appearance of which is possible due to the reduction of the house.

   This confirmed the traditional wall sealing in Russia.

2. Use of polyethylene foam sealant.
   Polyethylene sealants (proven as a laminate substrate) are highly resistant to moisture, good thermal insulators are not infected by various bacteria and fungi, they are not interested in rodents and insects.

   To be thinner than jute and laminate, PE foam tape can be placed between the rings in a rod that has no holes in the profile.

   But due to the low thickness and properties of the "dissipative" foam, the polyethylene tape will not be able to close the gaps caused by the possible deformation of the rod.

3. Use of foamed rubber sealant (EPDM) (picture 2). Self-adhesive foam seals (usually used for sealing window frames) do not contain the defects associated with the previous options.

   These seals are easily inserted into the profile groove (Fig. 3) and retract their shaft when the shaft is deformed, which covers even very important slots (up to 7 mm). In addition, a number of Finnish companies that are leaders in the construction of wooden houses are currently using this seal (Figure 4).

Modern man has long been accustomed to the fact that it is customary to use apartments in high-rise buildings as housing. They are built of foam concrete and brick. For wall insulation in these buildings, materials of synthetic origin are increasingly being used, which, although not harmful to human health, are sometimes not able to perform their direct functions.

That is why residents of megacities are trying to move into houses made of natural wood. If this is not possible, then you can build a house outside the city.

For this, logs or timber are usually used, insulated with jute thermal insulation.

Varieties and features of jute insulation

Before you lay jute on a beam, you should become more familiar with the varieties and features of this material. It has a natural origin, therefore it is close to dry wood. We can assume that jute is a dry grass, a spinning crop that successfully replaces flax.

Modern jute thermal insulation has excellent characteristics, among them:

• ability to seal joints;
• biological inertness;
• no unpleasant odor;
• tight fit to the beam and log;
• steam capacity;
• decay resistance.

Additional Benefits

Jute insulation is also quite dense.

If you purchase high-quality jute, then its density will be 60 g / m2, while the layer thickness can be up to 10 mm. The length of the fiber does not exceed three centimeters.

You can meet jute insulation in several varieties, in the first case, felt is added to the material in an amount of up to 15%, in the second - flax - up to 50%. Pure jute and jute with linen impurities are produced in rolls of different widths.

Selection and styling

Before you lay the jute on the timber, it is important to choose the right material.

It is necessary to start work on insulation only some time after the completion of the construction of the house. During this period, the wood will reach the desired moisture level, and the walls will shrink. But even after the thermal insulation has been carried out, the interventional insulation will let in moisture that comes from the beam or log.

With the help of thermal insulation, it will be possible to fill the joints in order to exclude the formation of cold bridges.

By choosing a thicker seal, you will ensure that it is easier to install. The material should be placed in the connecting groove so that it does not move, and after it is pressed with a log, the insulation must be fixed with a stapler, installing fasteners at a distance of 250 mm. If you purchased a ribbon that is too wide, then its edges must be tucked inward. The tape should also be located in the bowls.

Features of caulking

Laying jute on a beam is a prerequisite for insulation.

Some masters believe that there is no need to caulk the joints, but in practice this procedure is still required.

Once the log is seated, it can be twisted a lot. On one side of it, a 0.5 cm gap is formed, while on the other side the seal is strongly clamped.

In this case, caulking helps, in which it is best to use tow or ribbons.

This must be done only one and a half years after the construction of the house. In some cases, the installation of interventional insulation does not involve turning the ends of an overly wide tape. In this case, the ends will hang down on both sides. After the house shrinks, the hanging ends can be hammered into the joints.

However, in this case, you may encounter a problem, which is expressed in the fact that after 2 years the sealant deteriorates under the influence of ultraviolet radiation, moisture and wind.

Between the joints, as a result, you will have to hammer in low-quality material, which does not always allow you to achieve complete sealing.

Why choose jute sealant

If you have not yet decided whether jute will be laid on timber or any other material, then you should familiarize yourself with this issue in more detail.

First of all, they begin the construction of a wooden house, pursuing the main goal - environmental friendliness. Other materials can be used for caulking the joints between the crowns, namely:

• lnovatin;
• liquid acrylic sealants;
• linen rope.

One of the advantages of jute over the above materials is that it does not wind around the drill.

The insulation has such a structure that when drilling, the metal does not adhere to the thermal insulation, which is very convenient when working. In addition, jute is ready to serve exactly as long as a wooden house will stand.

The declared service life of thermal insulation is 75 years.

Some owners of wooden houses do not use jute to insulate the crowns of the timber, preferring acrylic sealant.

Experts believe that the feasibility of this approach may be questionable. Although the joints will not let the cold through, the walls will lose their ability to breathe. The steam will stop circulating and the wood may begin to rot.

Styling features

You can independently lay the jute on the beam, the features of these works require compliance with several rules.

It is important to lay the tape on the connecting groove. It should fill the space of the bowls.

Without bends, the material is laid if the house is built from an ordinary log or glued profiled timber.

Sometimes the insulation has a double-sided bending; this solution is suitable for houses made of chopped or rounded logs. The material can also be laid with one-sided bending, this method is suitable for structures made of planed timber.

It is also important to take into account the dependence of the thickness of the insulation on the material of the walls. If it is supposed to use glued laminated timber during construction, then the insulation should have a thickness of 0.5 cm.

When the system is based on a rounded log, it is necessary to purchase insulation with a thickness of 0.8 to 1 centimeter. If you plan to use a chopped log, then the jute should be up to 1.5 cm thick.

Work technology

Quite often, novice craftsmen wonder how to properly lay the timber when using jute insulation.

The work will consist of several stages.

How to choose interventional insulation for timber? Manufacturer reviews

The first involves the distribution of insulation along the interventional grooves, at the next stage the material is fixed with a stapler. Next, the next log or beam is laid, and at the end of the crowns, the thermal insulation is cut off with scissors.

As soon as the laying of the log house is completed, the protruding parts of the insulation can be caulked inside.

It is important to pay special attention to the fact that the grooves must be completely filled with thermal insulation. When installing log walls, which will be assembled manually, it is necessary to select thermal insulation depending on the quality of the interventional joints. The neater and denser they are, the easier it will be to insulate the walls. But, as practice shows, hand-assembled log elements are of average quality. In this case, it is important to know how to properly lay the jute on the timber.

Said insulation material is combined with an analogue in the form of tow.

Lay out the thermal insulation with your hands and place it in cuts and grooves. In the place where the thickness of the jute tape is sufficient, you can fix the tow with a stapler.

Recommendations for laying jute between round logs and beams without longitudinal grooves

Quite often recently, home craftsmen have been laying jute.

At the same time, a profiled beam or rounded log is insulated in one layer. When using conventional timber, thermal insulation must be laid in two layers. This rule will be more applicable to timber houses that do not have longitudinal grooves.

This building material is devoid of recesses for insulation, it is not possible to form a thermal lock in it, so it will be subject to blowing.

Conclusion

A prerequisite for the construction of a wooden house is laying jute on a beam. Interventional insulation made from natural materials is preferable compared to synthetic sealants, which, although easy to use, do not allow the wood to breathe.

As practice shows, the technologies for warming wooden residential structures, which were popular with our ancestors, are not only more familiar, but also more reliable for a Russian resident.

Before laying the frame, beams for beams (logs)? Tips, reviews, recommendations

During the construction of a wooden frame, whether it is a frame for wooden houses from a bar or a frame for a wooden bath, the question naturally asks - how to build a log from a wooden (log) bath?

In the photo - lining between the logs of a wooden frame made of moss - Kukushkin flax.

Since the composition of the wooden cabins, natural material has been planted in the intermediate space, mainly from vegetable origin, as it was easier to obtain and use throughout.

What to choose embedding a wood heater - tips and tricks

Before laying the frame, beams for beams (logs)? This question has been interested in the construction of wooden houses and wooden baths for many years.

What building materials made buildings in ancient times?

For a long time in Russia, materials such as crane, moss and fluffy pine wood were used to house houses.

The most popular for this task was drag and drop, once the walls of the apartment were completed.

Photo: It usually looks like a tugboat that heated up the gaps between the logs in ancient times.

Hell, with the help of a specially designed tool for this purpose, was cut into the space between the magazines.

In addition, this must be done both from the outside and from the inside. Otherwise, the whole building may be short after use.

It should also be noted that with proper handling of rubber parts, the height of the walls increased by 10 centimeters. Considering that for a log cabin, as well as for modern buildings, the characteristic shrinkage occurred when the wood yarn was pressed, as a result, a year after the construction of the house, the walls began to stain again.

If the house is made of wood, it is better not to replace it. In addition, such models have surprisingly small gaps, in which it is quite difficult to correctly place the patch.

Photo: An excellent choice for laying logs is moss with the exotic name "cuckoo's lan".

You can buy this material from our company. Store - warehouse is located in the east of Moscow, in Moscow.

No less popular material was also mosses, which are not subject to rotting under the influence of the environment and protect the tree from which the house was built before this accident.

Photo: A good interventional heater can be obtained from moss sphagnum - a swamp.

Fluffy wood, which is essentially cellulose, is a material made up of very short fibers.

As a result, there is a problem when it is impregnated with moisture, as soon as shrinkage begins, it becomes less elastic, which reduces the tightness of the seal. Therefore, the main condition for the long-term and efficient use of fluffy wood is considered between the logs, so that it does not come out of the gutters and is not wet.

Photo: on the left side of the photo - jute and on the right - llena llena (flnovatin).

The main stackers between the logs were bathtub and tree moss, flax fiber, jute fibers.

The use of these plants for masonry among the crowns of a wooden house was not only practical, but also very functional. All of them belong to hydrophobic plants and have excellent hygroscopicity, as well as sphagnum moss, which contains antiseptic substances.

Such interventional insulators have been and remain the main tool for heating a wooden house, but they are now available for some purposes thanks to advanced modern technologies.

In the same way, some manufacturers initially impregnate materials with antiseptic compositions to prevent decay and improve their quality properties.

In the photo - a high-quality material for laying wooden chalets between logs - jute tape is a dye.

The need for laying for a wooden house or a bathroom with an interventional heater is mainly due to the provision of an appropriate microclimate for the interior of the house, i.e. directly with insulation.

Tomorrow tapes, linotine and other heaters securely lock the joints between the logs, isolate cracks and cracks. Due to their special properties, these materials perfectly absorb moisture not only from the inter-spring space, but also from the surrounding air, as if it is too dry, it returns moisture. Today, having considered experienced builders - laying, a wooden house and logs, the most popular material for the construction of log cottages and log baths, houses from load-bearing and other wooden buildings, jute tape.

In the photo there is a wall covering between cylindrical logs with jute tape.

This type of insulation - pads - are made from jute fibers that grow mainly in countries with warm and humid climates, such as Bangladesh, India, etc.

The plant consists of the following: when the time comes, the jute with your hand is cut as it grows in the water. Then it is dried and washed in running water to facilitate the separation of the fibers. Only after the implementation of these procedures, the jute goes to the processing plant, where the needle is a non-woven fabric for laying logs and wood fibers from fibers. Depending on the desired end result, jute fabric comes in different thicknesses and thicknesses.

For laying between crowns of logs - a wooden house, use a dressing tape cut from canvas and twist into rollers of a certain width. Standard cuts can be called cylinders with a width of 10, 12, 15 and 20 centimeters. The cylinder is unloaded onto a bowl of logs or inside a rod and attached to it with a construction clamp.

If desired, the jute tape is treated with an antiseptic.

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This is our answer, advice, guidance and feedback to the question - what would create a house from a wooden sauna and frame houses and log baths, including roundwood and hand-cut logs.

All these soft materials are available in our warehouse in Moscow, where you can order and buy them. Need more feedback, tips and advice from the experts?

Wood itself is a good thermal insulator, but over time it can dry out and crack. It is important to insulate the interventional space even at the stage of construction of the log house. Which interventional insulation for timber is better and how much the material costs in large regions, you can find out by reading the article to the end.

The old methods of insulation with the help of tow, moss or felt showed their good side. Not infrequently, in the modern construction of baths and houses made of timber in garden and summer cottages, they are still used. They are environmentally friendly, but they have a number of disadvantages: they quickly rot, they are afraid of rodents, and it is difficult to lay, for example, moss. Modern cottages made of timber can reach thousands of m2, and insulation is needed that is easy to install.

The most common are jute and linen tape heaters, there are also mixed and woolen ones. Let's talk about each of them in more detail.

Linen

This is a tape insulation made on the basis of flax. Its main advantages:

1. It has high thermal insulation properties.
2. Hygroscopic.
3. Not a high price.
4. Ease of installation.

But the main disadvantage of flax insulation is quick creasing. It loses its shape under pressure and the cracks will have to be additionally caulked. But if the beam is profiled, then it will be difficult to perform caulking. In addition, moisture getting into the linen insulation is delayed and the tree begins to rot.

Jute

Jute insulation is made from fiber obtained from the southern tree. It grows in the tropics and is well adapted to moisture. Jute insulation has a number of advantages:

1. Less wrinkling due to the tougher texture.
2. Does not retain moisture.
3. Eco-friendly.
4. Ease of installation.
5. Low price.

There is only one minus for jute insulation, often in stores under the guise of natural jute tape they sell synthetic with small additives of natural lower quality. They externally differ only in color, the synthetic fiber is lighter. negligent sellers sell the material at the same price, although the quality characteristics of synthetics are several times lower.

Combined

Another type of mixed insulation consists of linen and jute, or jute and felt. It was invented to reduce the price of jute. The ratio of flax and jute in the material can be different: 50x50%, 70x30%, 80x20%.

The best is the one with a higher jute content, the price for them is also different. At the same time, the material took all the poles from both types of material and is considered the best.

There are several more types of tapes on a synthetic and rubber basis. But they do not pass oxygen so well and violate the ecology of a house made of timber. Foamed urethane foam is also not suitable for timber. It wrinkles quickly and does not have sufficient breathability. The price of such materials is lower, but it is not recommended to use them in the construction of a natural wooden house.

wool-based insulation

Natural sheep wool is suitable for the manufacture of interventional insulation and foreign companies produce similar materials. But the price of natural wool insulation is high and not sold in all hardware stores. They are rarely used in the construction of large cottages and baths from timber. In addition to the high price, wool absorbs moisture and releases it poorly. It takes a long time to dry the wool insulation. During this period, the timber will begin to rot. Manufacturers are struggling with this problem by treating wool insulation with various chemical compounds that, in addition to moisture, protect it from rodents and insects.

What material is best for timber?

When choosing a tape for your home, you need to immediately start from its environmental friendliness, water resistance and minimal creasing. Jute fits all criteria. Flax is less resistant, but you can use mixed linen and jute.

Jute has a unique feature when it comes under the pressure of the walls, it releases a certain percentage of resins that glue the seam and the space between the crowns becomes airtight. At the same time, the adhesive resin does not disturb the circulation of oxygen, but prevents the penetration of moisture and cold.

The second important point when choosing interventional insulation for timber is its width. The width of the tape is selected individually in each case and corresponds to the technology of the future caulking:

1. Caulking with another heater.
2. Caulking with the same insulation that is placed between the links.

The width of the tape insulation for caulking will be less than the width of the beam. The option is beneficial if the beam is glued or profiled for chamber drying, when there is no need to do additional interior finishing.

For a bar of natural moisture or a simple chamber drying, it is better to buy a width so that the insulation hangs 4-5 cm on both sides. Subsequently, a roller is rolled up from it and the walls are caulked.

Both technological solutions have the right to life. Choose depending on the timber and the specifics of the building. So for a bath made of glued or profiled timber in a steam room, you still have to do additional hydro and vapor barrier, so any of the technologies will do. Reviews about both technologies are mostly positive, negative ones are mainly related to the quality of the material.

How to lay interventional material

Installation of tape interventional insulation is easy to do even with your own hands. For this you will need:

1. Furniture or construction stapler.
2. Tape heater.

When laying on each link, a tape for insulation is rolled out and fixed with a construction stapler in several places. The main thing is that it does not slip when laying the next beam.

In a house made of profiled or glued timber, there is a special hollow in the material where it is convenient to place the tape. It is not necessary to fix the insulation with various adhesive compositions. They are all on an unnatural basis and will violate the environmental friendliness of the house.

If moss or tow is chosen as a heater, then they are carefully laid out on the timber in the most even layer. The main thing is that it completely fills the interventional space and at the same time does not interfere with the shrinkage of the beam.

When laying insulation, a number of conditions must be observed:

1. It is possible to lay material only in a dry season.
2. The beam must be dried and cleaned of dirt before laying.
3. The insulation must be dry and in sealed packaging.
4. You should not lay too thick a layer of insulation, it will not allow the timber to sit well in place, especially if the house is made of glued laminated timber.

Most of the negative reviews are just related to non-compliance with the laying technology. Reviews of poor quality are mainly associated with semi-synthetics and linen, which is heavily wrinkled.

How much does insulation material cost?

The price of an interventional view in all cities is little different. It depends on several factors:

1. Manufacturer (Imported insulation is more expensive than domestic, but if you take our quality and from a well-known manufacturer, then it will be no worse).
2. Composition (jute is more expensive than linen, mixed with a large percentage of jute is more expensive, the most expensive woolen from sheep's wool).
3. Well-known brands are more expensive than not hyped ones.
4. Purchase volume (a large batch of insulation has a price lower by 10-20%).
5. Buy via the Internet or in a large hardware store (Buy on the Internet is cheaper, since the entrepreneur does not have to overpay for renting space, sellers, etc.)
6. The size and density of the tape (the wider, the higher the price).

Consider the price of various types of material:

View	price, rub.
	Retail		Wholesale in the amount of 50,000 rubles.
	For 1 piece	For 1 kg	For 1 piece	For 1 kg
Jute tape up to 15 cm wide, length from 40 m (in a tape 4 kg)	450	100	380	80
Jute tape up to 15 cm wide, from 50 m long (in a tape 5 kg)	580	100	500	80
Jute tape up to 15 cm wide, from 150 m long (in a tape 14 kg)	1650	100	1300	80
Linen ribbon up to 15 cm wide, from 40 m long	250	60	200	40
Linen ribbon up to 15 cm wide, from 50 m long	330	60	270	40
Combined insulation 50% jute and 50% linen, width up to 15 cm and length from 40 m	350	80	280	60
Combined insulation 30% jute and 70% linen, up to 15 cm wide, up to 40 m long	280	90	320	100

You can buy interventional insulation for timber at any nearest hardware store. You should not purchase materials in small construction markets. There are many fakes out there. So you can buy full synthetics or semi-synthetics under the guise of jute. It will not justify its quality characteristics, and the price will be unjustifiably high.

The main thing when choosing is to take the one that wrinkles minimally and lasts as long as possible. And if you follow all the laying rules, then the walls of the house from the timber will be warm and will reliably protect the family in winter.

In a wooden house built of timber or logs, an amazing atmosphere is always created that has a beneficial effect on the psychological and physical condition of the residents, and this is due to the properties of natural wood. In order for such a dwelling to be warm, and it does not blow through in strong winds and does not freeze in the winter, its walls must be well insulated by choosing the appropriate material for this process.

Mezhventsovy insulation for timber which to choose

What interventional insulation for timber should be chosen in order to achieve all goals at once? This question arises for everyone who started the construction of a log house for the house. Since log buildings have been built for centuries, only natural materials have always been used to insulate such walls. This tradition has passed to our days, although a considerable number of artificial heat insulators are being produced today - they could not fully replace those natural ones that were traditionally used by builders.

If the construction of the log house is entrusted to the construction team, then it will be useful to keep the entire process under control and independently select and purchase all the necessary auxiliary materials, including interventional insulation. Otherwise, you can end up with poor-quality work, which sometimes simply cannot be corrected without a complete overhaul of the entire log house.

To understand how important it is to choose the right and high-quality insulation, you need to fully understand why it is needed when building a wooden frame.

Mezhventsovye heaters perform several important functions at once

Mezhventsovy heater is needed:

• To preserve and enhance all the thermal insulation qualities of wood, as well as to maximize the life of the building.
• To avoid the penetration of moisture between logs or timber, with the subsequent occurrence and development of foci of mold or fungus, nests of unwanted insects in the house.
• To ensure vapor permeability, since wood is a breathable material and reacts to increased humidity and temperature changes. Therefore, interventional insulation is mounted not only between timber or logs, but also around window frames and door frames.

In the presence of a properly selected and laid insulation, a residential building acquires the qualities necessary for it:

Low thermal conductivity, since the walls will not have cold bridges;

Resistant to strong winds, because the walls become windproof;

Balancing the balance of moisture absorption and evaporation of moisture.

As you can see, this seemingly insignificant element at first glance has a serious impact on the quality and overall durability of the building.

What insulation for crowns to choose?

Previously, in the construction of wooden log cabins for insulation, waste materials produced at home from various plants were used. The main one was flax, the fibers of which are a good "breathing" heat insulator. As you know, fabric was made from flax, and the coarse parts of the plant unsuitable for it were turned into insulation for the walls of the house.

In addition to flax, moss was used to seal the joints of logs, which could be found in large quantities in the forest thicket and in swamps.

Another popular insulation used to close the gaps between logs is felt, which was made from sheep's wool by pressing it and then cutting it into strips of the desired width and thickness.

These materials are in perfect harmony with wood, so the hut, insulated with them, served without additional repairs for many decades.

Today, in specialized stores, you can find many different artificially produced materials that manufacturers offer instead of traditional ones. They have a lower price than natural heaters, so many owners who are inexperienced in the construction business acquire them, not knowing the consequences of such an application. Such materials include expanded polystyrene, mineral wool, silicone sealants or penofol. Modern artificial heaters, of course, have their advantages, and in some cases you simply cannot do without them, but they are categorically not suitable for laying logs or timber between the crowns.

Video: a brief overview of interventional heaters

Natural interventional heaters

Lnovatin for warming crowns

Blooming flax

As you can understand from the name of the insulation, it is made from flax, it is also often called linen felt. It remains popular today, as it meets all the requirements for interventional insulation:

• This is an environmentally friendly natural material, therefore it does not cause allergies even in people with a predisposition to it.
• Lnovatin today is made not from flax waste, but from purified raw materials, therefore, thanks to its components, the insulation is able to create a microclimate that is favorable for the health of residents.
• Such insulation provides uniform sealing over the entire width and length of the crown.
• It is excellent at blocking wind currents.
• Lnovatin does not attract dust and does not crumble itself.
• The material is able to adequately respond to fluctuations in humidity - it either accumulates or releases excess moisture, thereby maintaining the optimal balance.
• Lnovatin is a breathable, vapor-permeable material.
• It provides a high level of thermal and sound insulation thanks to its good adhesion to the wood.
• This heater is very easy to install.

Rolls of flax wool

Lnovatin is a non-woven material made by pressing and cut into strips of a certain width, which can vary from 8.5 to 200 mm. The thickness of the material is 5 ÷ 7 mm, the length of the strip in a roll is usually 2000 mm.

If the insulation does not have the desired density, then it is laid in two or three layers, fixing the logs on the crown with brackets.

Temporary fixation of insulation with stapler staples

The edges of the insulation should not extend beyond the crown, otherwise, after installing the logs, they will have to be hammered into the slots. It is recommended to think over this moment in advance and carefully bend and secure the edges inside when laying the next crown.

How to properly lay the tape interventional insulation

You need to know that when using lnovatin, it is recommended to close the joints of logs after their installation with a decorative jute cord so that the seams look aesthetically pleasing, and this will lead to additional costs.

Lnovatin also has negative sides:

It can become a breeding ground for various insects, such as moths, wood grinders, bedbugs and others;

Birds are happy to use this material to build nests, pulling out pieces of it from the gaps between the logs, which leads to a mandatory repair, in which the seams need to be clogged with insulation again.

Therefore, using lnovatin, it is necessary to cover the beams or logs with an antiseptic very well before laying it.

Moss as interventional insulation

Insulation such as moss is used for laying between crowns from time immemorial. They have not abandoned its use even today, since it is still considered the most reliable and affordable material.

Moss has been used since ancient times as a heater for log cabins.

In regions where log buildings were traditional, moss grew almost everywhere, which is why it was a non-alternative insulating material for interveinal sealing. Houses insulated with moss served for decades without repair, and even when they were dismantled after many years of operation, one could notice that the logs were kept in perfect condition and were suitable for building a log house in another place.

Moss protects log cabins from rotting and damage

In total, there are about 300 different types of moss, but only two of them, called "sphagnum" and "cuckoo flax", are suitable for warming wooden log cabins. The composition of these representatives of the flora contains a large amount of antiseptic substances that resist putrefactive processes well. Penetrating into the wood, flavonoids disinfect its fibers, thereby preventing them from decomposing.

The log cabin collected on moss has an amazing aroma of the forest, thanks to which a special microclimate is created in it. Since the material is environmentally friendly and non-allergenic, it is safe for humans. In addition, many people suffering from asthma, lung diseases, dermatitis and other ailments, being in such a house, feel significant relief.

Moss is especially suitable for warming walls made of hand-crafted logs, since they do not have perfect evenness of the crowns. Moss can be laid in this case unevenly - in some places with a thicker layer, in others very thin, which is difficult to do using tape material.

• Sphagnum moss is a short plant with soft, small, light green leaves and long, fibrous roots. This type of moss has more antiseptic components than cuckoo flax, so herbalists used it to treat non-healing wounds, as it works on a par with the well-known brilliant green or iodine.

The best choice for insulation - sphagnum moss

As a heater, this type of moss is characterized by high density and elasticity. It perfectly maintains the balance of wood moisture and does not respond to temperature changes. In addition, sphagnum is not afraid of ultraviolet radiation, does not dry out from them and does not lose all its heat-insulating properties.

Sphagnum grows in wet swampy areas or forest thickets. It covers the soil with a soft carpet and is fairly easy to assemble, but it is recommended that this event be done in sunny, dry weather. After harvesting, the moss is folded in small bunches into a shock for a short drying. Drying time takes one to two weeks, depending on the moisture content of the raw material, and it, in turn, will depend on the place and time of collection of plants.

Laying sphagnum on crowns is quite complicated and not as convenient as when using ready-made tapes of other heaters. But on the other hand, this approach is most effective for thermal insulation and protection of the log house from various negative natural influences.

• Kukushkin flax is a hard, long-staple brown-colored moss. When dry, it acquires a reddish tint. You can find this plant in the same way as any moss - in wet swampy areas or in the thicket of the forest. If cuckoo flax is harvested for use as insulation, then it is better to look for it in the forest, as it is not so saturated with moisture there.

It looks like a growing cuckoo flax

Unlike sphagnum, cuckoo flax is recommended to be collected in cloudy weather, so it will better retain its qualities. After collection, this type of moss is laid to dry in long strips, which, after drying, can be laid on the crowns of logs. It should be remembered that cuckoo flax is not dried thoroughly, since when laying it must have a certain percentage of moisture. If the raw material accidentally dried out, then it needs to be slightly moistened during installation. However, often kukushkin flax is laid even when freshly harvested.

Harvested cuckoo flax

The process of interventional compaction is carried out in 4 ÷ 5 layers, and each of them is laid perpendicular to the previous one. When laying logs on the insulation, the material should be held, as this process requires accuracy. Upon completion of the work, the moss remaining hanging outside must be caulked into the joints of the logs using a chisel.

Unfolding moss when installing a log house

Kukushkin linen has a good density and does not crumble when dried. It is not subject to putrefactive processes, is not afraid of high humidity and retains all its insulating qualities for the entire period of its operation.

This insulation also has its drawbacks, which should be taken into account when choosing it - this is low fire resistance, as well as the heterogeneity and friability of the material, which makes it difficult to install. In addition, it is one of the favorite food for birds. To protect the insulation from birds, it must be well filled into the seams between the logs, and covered with a jute rope from above.

jute insulation

Another effective insulator for interventricular joints is jute, made from a tropical annual plant of the linden family of the same name, the fibers of which have a high percentage of lignin. This is the name of a unique resin, which is an excellent natural antiseptic that can protect not only the insulation itself, but also the material of the timber or logs.

Harvesting jute raw materials

Thanks to this component, jute material is resistant to moisture, which means it is not subject to putrefactive processes. Birds do not take it away and rodents do not damage it, which is also very important for high-quality insulation of a residential building.

Jute insulation in our time is often produced in the form of a tape 100, 120, 150 and 200 mm wide, about 15 mm thick. The density of the material of this thickness is 400 ÷ 450 g/m². Insulation tapes are rolled into rolls of 2000 mm.

Roll of tape jute insulation

In addition, ropes are made from jute, which are also used for decorating interventricular seams in log or log cabins.

Jute has a golden hue, which is in perfect harmony with the color of the fibers of any wood species.

However, paradoxically, the disadvantage of pure jute insulation is its main advantage - very often an excess of lignin promotes gluing of its fibers, which makes the material lose its plasticity, becomes rough and hard. Therefore, jute is combined with flax fibers, also used to insulate crowns.

So, several combined options are produced:

Linen jute (jute linen);

Jute felt.

• Linen jute is made from linen and jute fibers. Their ratio may be different for each individual manufacturer, therefore, the characteristics of the insulation vary somewhat.

Proportions of 1:1 are considered ideal, since the resulting material combines the elasticity and softness of flax, as well as the rigidity and strength of jute. Linen fibers are inside the tape, and jute acts as a protective layer - the result is a durable and plastic insulation.

Therefore, the combined material is considered the optimal insulation, especially for objects that are problematic in matters of high humidity, such as saunas and Russian baths.

• Jute felt is also made from flax and jute, but in a ratio of 10% to 90%. In this embodiment, the two components are mixed together. Linen dilutes the rigidity of jute and prevents its fibers from sticking together, which favorably affects the insulating and antiseptic qualities of the material.

Like any tape insulation, jute is easy to install. The main thing is to choose the right width of the tape corresponding to the crown.

Rolling jute insulation along the crown

The tape is rolled out on the crown, and if overhangs are formed, then they need to be bent and attached with staples using a stapler. Experts advise choosing the width of the tape a little more than the size of the crown, and making bends during installation - this process will give accuracy to the appearance and the necessary thickening of the insulation layer.

Insulation - tow

Tow is made from different materials - it can be linen or hemp, and consists of processed fibers of these plants. These fibers are sometimes pressed into tapes, and are also used to insulate crowns, having good thermal insulation performance.

Tow - long known, but, alas, not the best insulation

Despite good insulation properties and an affordable price, tow has not become such a popular material for warming crowns. One of the reasons for this lack of demand can be called the great love of birds for this insulation. Its fibers are easily separated from the total mass, so birds willingly use this when building nests in the spring.

After such raids, the seams have to be repaired annually. If this material is used, it is recommended to close it from the outside with a jute rope.

It should be noted that tow is more hygroscopic than other heaters - it absorbs moisture and is prone to decay. It is advisable to use it indoors with normal humidity, so it is more often used to insulate window and door openings if windows and doors are made of wood.

From the foregoing, we can conclude that any tow is not the best choice for warming crowns.

Sheep wool (felt)

Sheep wool has long been used as insulation, especially in those countries where sheep breeding is developed. Over time, such insulation began to be produced on an industrial scale and exported around the world.

Natural sheep wool felt is an excellent material for warming a log house

This material is made from raw materials cleaned and treated from the appearance of insects, by mixing and combining woolen and felt fibers into one sheet.

The insulation is produced with a thickness of 12 to 18 mm, a width of 90 to 200 mm and has very high thermal and sound insulation properties.

• Due to its elastic and springy structure, the insulation fills the entire interventional space, leaving no cold bridges. When the walls shrink or the gaps between the logs widen, it is able to shrink and straighten.
• Natural felt does not cake or compact over time, therefore it does not lose its original qualities.
• Sheep wool perfectly accumulates moisture, contributing to good vapor permeability of the seams, therefore it is not affected by fungal formations and does not rot.

The only drawback of this material can be considered its high price, since mainly only imported samples are on sale.

Artificial insulation

For interventional insulation, manufacturers also offer artificial heaters. Some of them, more or less suitable for this process, are also worth considering.

"Polyterm"

Manufacturers of "PolyTerm" characterize it as an environmentally friendly heat-insulating material, since it is made from 100% polyester fiber. Its production technology was developed in Finland, where it has been successfully used in harsh circumpolar climatic conditions for a long time.

Insulation of the log house "PolyTerm"

"PolyTerm" is widely used as an interventional insulation for residential buildings, for saunas and baths.

The positive qualities of the material include the following:

• This material is "breathable", which means it will harmonize well with the wood structure. "PolyTherm" is not hygroscopic and has the ability to repel moisture, so using it, you can not worry about additional sealing work.
• The insulation has vapor-permeable properties, that is, it does not interfere with the natural exchange of gases and vapors.
• Thanks to the mentioned advantages, there is no favorable environment for the development of microflora in the insulation tape. Unlike natural materials, "PolyTherm" is unattractive to birds and various insects.
• The material is elastic and resilient, so when the walls shrink or the wood dries out, it straightens out and fills the resulting space.
• "PolyTerm" has a high fire resistance.
• Its most important quality is a low coefficient of thermal conductivity.
• The material does not contain harmful phenol-formaldehyde compounds.
• The chemical composition of the fibers does not cause allergic reactions in the body.

Roll "PolyTerma"

Manufacturers claim that "PolyTerm" may well not only replace natural materials for interventional insulation, but even perform their function at a higher level.

Video: "Hollofiber" - a representative of synthetic interventional insulation for a house made of timber.

latex sealant

For the insulation of wooden buildings, sealants made on various bases are also used. One of them is "Consil", which is designed specifically for interventional insulation and sealing natural cracks on logs or beams that have arisen from the drying of wood.

Banks and tubes of latex sealant "Consil"

"Konsil" is a one-component sealant made on a latex basis and used for exterior and interior work related to wood.

Sealing the joints of a log cabin with sealant, ...

• Latex sealant allows you to normalize the humidity and temperature regime, comfortable for living inside a log building.

... or grooves in a frame made of profiled timber

• This material perfectly restrains wind currents, so the walls become not blown, and there will never be drafts in the house.
• Thanks to the sealant, there is no heat leakage, so it is stored in the house, which can significantly reduce heating costs.
• The seams sealed with Konsil do not require periodic repairs - caulking, which periodically has to be carried out if natural tape heaters are used.
• The sealant provides reliable closure of interventional gaps and cracks from the penetration of various insects into the house.
• The insulation is produced in various colors, so you can always choose the right option for a particular type of wood.

This is how a poorly insulated log cabin looks like. It is shown what problems can arise with the wood of logs, as well as how serious heat leakage will occur from the room.

Schematically - what leads to poor-quality insulation of the log house

Since a poorly sealed interventional gap is not protected from atmospheric influences, the risk of dampness and mold, the appearance of insects, the penetration of wind and sounds from outside into the house, as well as cold in winter and hot air in summer, increases.

When insulating, be sure to close the resulting cracks

If the interventional gaps and cracks in the logs are sealed securely, the house can be considered protected from all the problems mentioned. The heat generated by the heating appliances remains completely inside the house, and the outdoor cold or heat will not have bridges to penetrate inside.

The application of the sealant is quite simple, as it has aggressive adhesion to wooden surfaces, literally soaking into them. Good adhesion of materials is maintained throughout the entire period of operation of the building, since the "consil" is not affected by low and high temperatures.

The sealant remains elastic and is able to change size and shape repeatedly, under the influence of expansion and shrinkage of wood or shrinkage of walls.

Not to mention the moisture resistance of this material. After hardening, it is not affected by atmospheric precipitation, does not let water through and is not washed out of the gaps by it. In addition, the sealant is resistant not only to temperature changes, but also to the ultraviolet component of sunlight.

According to the results of the tests on the impact on the sealant by various temperatures, the aquatic environment, ultraviolet radiation and deformation by 50%, the manufacturers predicted the operational life of the material - it is 30 years or more.

The nuances of laying interventional insulation

Whatever insulation is chosen for the crowns, its installation takes place according to the same scheme. Naturally, fixing tape material is much easier than laying out moss or tow, but both work are carried out according to the same principle.

• Tape insulation is rolled out on the surface of the laid log and fixed with brackets. If the insulation is wider than required, its edges are wrapped and also fixed with staples.
• If the edges of the insulation were not wrapped inward before the next log was laid on top of it, then after completion of the work, these excesses are hammered into the slots with a chisel. This process is called primary caulking.
• Secondary caulking is carried out a year later, after the walls shrink.
• When used for insulation of moss or tow, the material is carefully laid out on the crown, with a layer of 10 ÷ 15 mm, pressing it to the base.

Unfolding a layer of moss

• After laying the logs on top of the insulation, the fibers hanging on the sides (usually make an allowance of about 50 mm in each direction) are also tucked into the gaps between the logs with the same chisel.
• Sometimes insulation is combined using tape insulation, which is rolled out on a beam or placed in a special groove, and a sealing jute cord is laid along its edges. After mounting the upper log, the gap between the logs from the side of the street is filled with sealant. The gap between the logs on the inside of the wall can be carefully caulked with one of the natural materials.

Caulker of interveinal seams from the inside

Now, knowing the characteristics of most of the materials used to insulate the crowns, you can study them well, compare the price level in the region of residence or the possibility of self-harvesting, and, in the end, stop at the most optimal option. It remains only to correctly carry out the process of warming on your own or to check the conscientiousness of the work of the builders for the correct laying of the material.

As you know, you have to pay for everything. Craving for environmental friendliness and comfort is no exception. If you chose a log cabin as a material for a dwelling or, say, a bath, be prepared for non-standard approaches to thermal insulation. Although the beam itself usually does not need insulation, at least externally, the joints of the logs (or crowns) will still have to be insulated.

For this purpose, interventional insulation is used. What mezhventsovy heater for a log to choose? Let's learn not only about popular materials, but also understand the principles of thermal insulation of joints.

Scheme of timber insulation

Need

The junction of logs is the weakest point of the log structure. Firstly, it is here that the wall thickness is the smallest, and secondly, initially it is an open gap into which moisture and wind can penetrate. To protect this “deprived” section of a wooden house, a log insulation is used.

Such material performs several important functions at once:

• Reliably isolates the space inaccessible for revision between the crowns of the house from water and moisture, which, over time, can seriously damage the house;
• Does not allow blowing into the cracks between the logs;
• Compensates for changes in the volume of wood, which occurs due to seasonality and changes in temperature and humidity.

The beam is insulated both at the construction stage and after, the so-called caulking of the log house.

As a conclusion: the interventional sealant serves not only as a heat insulator, but also:

• Performs waterproofing functions;
• Increases the life of the building.

It is necessary to approach the choice of such material very thoroughly.

Selection principles

What properties should an interventional insulation have to insulate joints?

1. Must be resistant to water, moisture, which can fall on it as a result of precipitation. The material must protect the beam from mold and fungus and their consequences, rotting, as well as insects. One of the best, and at the same time popular materials of this trend are linen and jute. Due to the natural resin of lingin, jute and linen, which are part of their composition, they do their job perfectly.
2. Fire hazard. Although a wooden structure is more prone to the fire element a priori, choosing the appropriate material for insulating the seams can complicate the situation. But, here everything is as usual, natural ones burn better, synthetic ones burn badly or do not burn at all. Linen insulation is most at risk. To increase their fire resistance, the tapes are impregnated with flame retardants. However, this is not a panacea, but only a slight improvement in their refractory properties.
3. Life time. The installation of a heat insulator takes place at the construction stage, which means that it will be difficult to replace it during operation. Therefore, it is best to choose a material that, in an ideal situation, will be comparable in service life to that of the wooden house itself.
4. Should not be interesting to birds. One of the problems for the owners of wooden buildings is the attack of birds on the insulation between the timber. They use the material to build their dwellings. Most of all they like flax and moss. When using these materials, you need to regularly check the condition of the seams, and seal the gaps formed.
5. Sufficiently dense, with a moderate thickness. In most cases, insulation with a thickness of 8 to 10 millimeters is sufficient, provided that its density is 700 grams per square centimeter. The following indicators of the ratio of thickness and density can be considered acceptable:
   1. 5 mm - 400 grams per square centimeter;
   2. 6-10 mm - 600 grams per square centimeter;
   3. 10-15 mm - 800 grams per square centimeter.
6. Material shape. At the construction stage, tape insulation is used. It is convenient to roll it directly over the deck and secure it with a construction stapler. Materials in the form of tow are used for caulking (laying gaps) between crowns.
7. Good thermal resistance. In fact, this is one of the most important indicators. Natural materials in our case cope better with the task of preserving heat.
8. No harm to health. Most heat insulators in use today comply with this rule. However, there are (usually cheap) materials that contain and exude substances that are harmful to humans. For example, when Isover is damaged, allergic dust is released.
9. Elasticity and compensatory properties. Wood has the ability to shrink and expand. The interventional insulation must be able to compensate for changes in the distance between the crowns. To do this, it must be both dense and elastic.
10. material width. This indicator is directly related to the climatic conditions of the region in which it will be used. If the average temperature does not exceed -20 degrees, a tape 10 mm wide is enough, at -30 you need 12, and if it's -40 outside - all 14 centimeters. For beauty, it is important that the tape is not visible from under the log, so it is good to purchase a product 5 mm narrower than the groove of the log. If this material will be used for caulking, you need to purchase 10-15 percent more of the groove area in which it will fit.

Having dealt with the main princes, we can pay a little attention to three specific samples of natural and synthetic materials and determine which interventional heaters are better.

old-timers

There are materials that were used for our purpose in antiquity, since a wooden structure in Russia is by no means a novelty. Let's see which interventional insulation is better.

Moss

There are several hundred varieties of moss, but only two of them are used in construction. This is sphagnum moss and cuckoo flax. The first one is white and the second one is red.

Sphagnum moss has very high insulating characteristics. Compared to its counterpart, it has a lighter color. It contains antiseptic substances in its composition. It owes its use to the latter not only in construction, but also in medicine.

moss sphagnum

Flax can be harvested by hand, but as it is a Nordic plant, it is not available in all regions. There are organizations that sell moss briquettes for construction.

After collecting the moss, you need to dry. However, the process of rash does not last long - 1-2 weeks. By purchasing sphagnum from a construction company, you get a ready-to-use product. However, completely dry moss is never used for insulation. After laying on the timber and pressing down with the upper crown, the moss should release juice containing all the same notorious antiseptic substances that will protect the lower frame from decay and insects in the future.

Moss is laid on the crowns in large piles, which will be pressed by the next log. If you put a small amount, cracks and even through holes may form after drying. Definitely need to make a lap on the walls. In this case, you can caulk the timber after drying.

• Buildings insulated with moss have a special aroma. Asthma sufferers feel relief from being in such buildings.
• Moss is hygroscopic - it absorbs moisture and leaves the log dry. Natural, vapor-permeable material does not harm, but rather creates a microclimate in the house.
• The disadvantage of moss can be called the complexity of laying during the installation of timber, as well as interest from birds. These creatures also prefer to use non-synthetic, but natural materials for their nests.

Lnovatin

The material in the form of a ribbon is made from natural linen. After that, it undergoes processing on a needle machine, which increases the natural properties of this material.

Technical flax, which serves as the basis for the production of this material, is grown on special "dry" soils. Flax contains 4 main components:

• Cellulose;
• Water;
• Wax;
• Lingin.

The latter, in turn, combines ordinary, fragile substances into one whole, wear-resistant structure. Lnovatin is one of the most durable natural insulation materials.

Avaterm

Synthetic material. Created on the basis of polyesters and has Finnish roots. Three significant advantages over natural insulation:

• Life time. Manufacturers claim that the service life of the material reaches 200 years, and this is more than enough for a wooden structure.
• Lack of interest in birds. Only natural insulators are suitable for birds.
• Avaterm is a fire-resistant material, which is of particular importance in the construction of a wooden structure.

The seal is available in the form of tapes of different lengths and widths. Thickness options available: 8.15 and 20 mm. The width can be 100-200mm. Avaterm is sold in rolls 10-20 meters long, depending on the thickness. Options are also available for glued beams.

The price of the material is also quite acceptable.

Other

Of course, the three examples we have given are not a complete list of insulation between logs. For these purposes, use:

• Sheep wool;
• Jute;
• Polyterm.

We will talk about all these materials in separate publications. For example, many people are interested in whether it is better to use linen or jute for an interventional space.

And someone asks: what is better jute or moss?

We will devote a separate article to jute insulation in the near future.

By the way, the issue of the "Warm seam" technology for a wooden house was recently discussed. This approach can greatly protect the sealant.

This article deliberately did not discuss all the points related to seals. However, we have collected the most important and useful. Which interventional insulation for a bar to choose for a house depends on various factors, and the main ones are the financial component and efficiency. The selected option must correspond to the overall design of the building.

Traditionally, in the wooden construction of baths or residential buildings, interventional insulation is used to seal joints in the walls.

The main purpose of the material is to insulate the structure of the log house and improve the performance of wood.

Most heaters contain natural ingredients, however, some materials may contain artificial filling, which is categorically not suitable for wooden buildings.

Why is a heater needed?

Mezhventsovy insulation is a versatile material, so it is widely used for houses and baths made of round logs, profiled or glued beams. In this case, the density of the insulation can be about 750 g / sq.m. with a thickness of up to 11 mm.

To reduce heat loss, the insulation is laid in one layer. It is important to remember that when using uneven or under-dried timber, the insulation is laid in several layers.

The insulation contributes to the timely steam and heat insulation of a wooden structure, high-quality air exchange in the premises.

When building a log cabin of a bathhouse or a house, an important condition is to minimize possible gaps between logs and beams. It is for this reason that work is being carried out to seal with high-quality insulation.

Such measures are aimed at effectively protecting the building from adverse climatic conditions.

Performance characteristics

High-quality insulation, which is placed between the crowns of logs or timber, must meet high standards of quality and safety of use. Therefore, the main operational characteristics of the material include:

• High elasticity and density, preservation of properties throughout the entire period of operation. Due to the elasticity, the insulation is able to take the desired shape, and the density - to fill the existing gaps between the crowns.
• Low thermal conductivity for effective protection of walls from heat loss.
• High moisture and vapor permeability.
• Resistant to mold, fungi and harmful microorganisms that occur when exposed to high moisture and heat.
• Resistant to UV exposure and adverse weather conditions.

Types of interventional heaters

The modern construction market offers a large selection of natural heaters.

The most common options are felt, jute, moss, linen and combined.

Manufacturers also offer wear-resistant synthetic insulation materials - penofol, mineral wool, polystyrene foam boards, silicone sealants.

Without a doubt, they have higher performance characteristics in comparison with natural counterparts, but they are not suitable for insulating wood buildings.

Felt (sheep wool)

A natural material for insulation, which in terms of its performance properties is superior to tape heaters made from vegetable fibers.

Felt is a worthy option for structures made of profiled timber. For warming residential buildings and baths, it is simply irreplaceable, although it is not cheap.

In the production process, the felt sealant is carefully processed with special flame retardants, as a result of which it absorbs moisture well and quickly releases it when heated.

It is resistant to the appearance of fungus and mold, does not cake during operation.

Felt is suitable for warming walls and partitions of log houses and baths.

Jute

Jute material is a modern representative of tape insulation, which has a dense and uniform structure. Jute is an expensive material, unlike flax, but it is of higher quality.

A distinctive characteristic of jute is its high hygroscopicity.

Jute interventional insulation is made from annual tropical plants of the mallow family, which grow in hot countries. Plants contain about 25% lingin, a natural resin that has high antiseptic properties.

Jute has a lot of advantages that distinguish it from its main competitors:

• Environmental friendliness and safety;
• Good thermal conductivity;
• Resistance to decay and fungal attack;
• Durability and practicality;
• Ease of installation;
• Attractive appearance.

The disadvantages include susceptibility to caking and high cost.

Walls insulated with jute tape do not need additional decorative finishing, and the seams are even and tight.

Jute is represented by the following varieties: jute tow, jute felt and jute linen.

• Tow has solid and long fibers. Used for caulking seams.
• Felt is characterized by increased fragility and stiffness of the fibers. Used to seal door and window openings.
• Jute linen is a mixture of linen and jute fibers. Differs in high wear resistance and elasticity. Suitable for caulking walls and partitions.

Moss

Currently, moss remains an affordable and cheap option for warming crowns in houses and baths made of logs or timber. Moss is a natural thermal insulation material that has unique performance characteristics:

• environmental friendliness;
• Vapor resistance;
• Resistant to crushing and deformation;
• Antiseptic properties.

Moss quickly absorbs excess moisture and provides good air exchange. As an interventional insulation, it is recommended to use sphagnum (white moss) and cuckoo flax (red moss).

The most durable and wear-resistant is red moss, which is characterized by a high content of antiseptic components and resistance to high moisture.

White moss has high thermal insulation properties and reliably protects wood from fungal infections.

Despite the obvious advantages, moss also has some disadvantages - low fire resistance and the complexity of laying.

Linen

Linen materials for insulation have been used for a long time. Linen is hypoallergenic, provides good air exchange, does not create static charges, and is resistant to mold on the walls. Interventional insulation of this type has:

• High elasticity and softness of fibers;
• Long service life;
• Low coefficient of thermal conductivity;
• Resistant to UV radiation, microorganisms and mold;
• Affordable cost.

Currently, manufacturers offer two types of linen insulation - tow and linen.

Tow

Differs in low cost and complexity of installation. Mezhventsovy insulation for timber has a high hygroscopicity and a tendency to rot, so it is more appropriate to use it to seal window and door openings.

When using tow, caulking is carried out twice - in the first year after the completion of construction, and in the second year - after the building shrinks.

Lnovatin

A material that is made from flax fibers on special equipment.

To give strength, the finished fabric is stitched with threads. Lnovatin is distinguished by its affordable cost and ease of installation. This is a good economical option that is suitable for warming houses and baths.

Often used after complete shrinkage of the structure.

Combined heaters

They have unique operational properties of the material from which they are made.

Flax in combined materials helps to increase elasticity and practicality, jute - to increase resistance to creasing and caking.

The special structure of the combined insulation satisfies the needs of the building material, taking into account the climatic conditions in which it is used.

What insulation is suitable for a bath?

Often, novice masters ask themselves the question - what kind of insulation to choose for the walls of the bath?

The best representatives are moss, jute and flax insulation, as well as their derivatives. They are successfully used for caulking wooden houses and baths.

To understand which is better to choose a heater for a bath, you should pay attention to the main characteristic of the material - density.

For timber structures, a 4 mm thick insulation is used with a density of 350–450 g / sq.m.

For steam rooms made of logs, products with a thickness of 5 mm and a density of at least 600 g / sq.m are better suited.

For houses of 2-3 floors, combined with a bath, material is used with a thickness of 9-11 mm and a density of up to 750 g / sq.m.

To choose a quality compactor, you need to know what type of wood is used to build a log house.

For baths made of timber and rounded logs, you can choose materials up to 10 mm thick - jute felt, flax felt, a combined version with jute and flax.

For a chopped-type bath, it is better to choose heaters up to 15 mm thick - felt from jute and flax, tow in ribbons and bales from flax or jute, moss.

Methods for sealing interventional gaps

Regardless of what type of material was chosen for the insulation of a wooden structure, installation work is carried out in several available ways:

• No folds;
• Curved on one side;
• Curved on both sides.

Laying insulation without the use of bends is characterized by high quality fit and small technological gaps.

The material is laid out along the perimeter of the log house on the base, the next element is laid on top. Fixation is carried out with a construction stapler.

For buildings made of timber, the installation method with a one-sided bend is used. For this, a sealant is taken, the width of which is twice the width of the log. The strip is mounted with a one-sided bend on the lock. On the outer side of the wall, a rope made of jute or flax is additionally installed.

Installation of insulation with a double-sided bend is carried out for buildings made of wild logs, fire monitors or round logs.

Often, these building materials are uneven in size at different ends.

The interventional insulation for the timber is fixed with a stapler, while the strips are folded in half and offset in width. This allows you to perform the correct laying between the ends of different sizes. In addition, this method prevents complete shrinkage of the wood.

The choice of the best insulation option for a house or a bath depends on many factors that experienced craftsmen take into account at the beginning of construction.

So, what is interventional insulation? In simple terms, this concept is general - this includes all building materials that insulate and seal interventional joints in log walls. Most of them are based on flax and jute, although modern heaters already have an artificial filling, which, however, is not quite suitable for a bath. And this article will help you figure it all out - how to choose interventional insulation for a bath, and whether it is worth the risk with popular, but not intended for this purpose, materials.

Mezhventsovy heaters, time-tested

Option #1 - jute and its derivatives

The most popular today is jute - a southern plant from the linden family, which grows in warm and humid countries. It is more expensive than linen, but also of higher quality. Its most valuable advantage is its amazing hygroscopicity. Jute itself is closest in its properties to wood: it is durable, hygroscopic and consists of 20% lignin polymer, which determines its resistance to moisture. For comparison: in conifers, lignin is only 24%. The only point: when used in baths from glued beams, the width tolerances should be minimal: only 1-2 mm.

The color of jute is quite nice - light golden, and it looks great in the walls of the bath. But some manufacturers, for the sake of profit, also add flax fiber to this material, because of which it significantly loses quality. You will determine this catch right away - the grayer and softer the jute, the more linen it contains. Avoid this purchase. So what's wrong with flax in jute? The fact is that pure jute has a surface density of 400-800 g per square meter. It is from this indicator that the caking of the insulation and the uniformity of shrinkage of the bath directly depend. Linen has a much lower density. The second important point: when installing dowels, pure jute is not wound around the drill.

Option # 2 - tape heaters

Particularly convenient to use is a tape interventional insulation for profiled timber: environmentally friendly and natural. You will purchase it in the form of a ribbon, and in the store you will immediately be offered its different lengths and thicknesses. Why? Because the bars come in different parameters, you will need to make the necessary measurements in advance. Such a heater should be used as follows: we bend the strips along and put them between the crowns so that the folded edge is inside the house. At the same time, leave 5 mm to the edge of the beam - this is how you get beautiful bath walls with even sealing seams. And yes, lay the tape tow in 2 layers.

It is also becoming popular and such material as lnovatin. In terms of its qualities, it is similar to jute, but it is cheaper. The seam turns out to be even, and there is no need to additionally sheathe the internal walls. This is an environmentally friendly insulation for profiled timber and rough logs, which "breathes" and provides quite effective thermal insulation. And the birds usually do not like it.

Option # 3 - good old cuckoo flax

And to this day, many builders remain faithful to the "real Russian interventional insulation" - moss. They only recommend putting it in large quantities, not sparing, removing all the cones and branches from it. If you took it too dry, you can safely wet it before use, so it will wrinkle much better. And finally: today wool is practically not used in construction - it has too many shortcomings.

Modern interventional heaters

Of the newest materials, there are many reviews about euroline - supposedly it was they who assembled the house for the president. They make it in Finland, and of different types: the more expensive one will never rot, no matter how wet it is, and the second one can only be used with dry timber. With a damp forest, it turns black and turns into dust. It also attracts with its quality a new Finnish interventional insulation PP-TERMO. Here are its competitive advantages:

• Resistant to mold and various microorganisms, does not rot.
• It has low water absorption, and therefore is always dry. This, in turn, significantly increases the life of the wood.
• It is not pecked out by birds - it is simply difficult for them to reach.
• Fire resistant - even has the appropriate certificate.
• It does not need caulking - after drying, the log quickly restores its volume and fills all the cracks and gaps itself.

And it has an unlimited service life - almost forever.

Materials unsuitable for insulation

Option #1 - mineral wool

Ordinary mineral wool also cannot serve as a heat insulator for timber in any way - its moisture absorption is close to zero for its threads. All the moisture in this material is held by the tension of the fibers and does not disappear anywhere. In addition, this material allows heat to pass through and even creates a dew point when kindling a bath. And yet, unscrupulous builders sometimes manage to use it too.

Option #2 - isover

As for Izover, which has recently become incredibly popular, in those places between the crowns where there is no gap, it is compressed by almost 100%, and here its heat transfer is somewhat less than that of other material under the same conditions. But in places of gaps, Izover is a little fluffy and quite normally copes with its functions as a heat insulator. On the other hand, Izover’s ability to receive and remove moisture is almost the same as that of many other interventional heaters, but this material does not burn, does not rot, it does not need to be caulked and over time it does not crumble like dust. Unpleasant dusting can be eliminated with a sealed finish.

So, let's sum up. Here is what Izover is preferred by many as interventional insulation:

• Does not burn, does not rot;
• Convenient to work;
• It compresses well and leaves no gaps;
• Birds don't like it
• Doesn't need an extra caulk.

But this fashionable material also has a significant drawback: it is not very environmentally friendly, and when slightly torn, it emits caustic and allergic dust. It also quickly accumulates moisture ... And many lazy builders convince future owners of baths to use this interventional insulation - after all, it is much easier for them to work: it is cut easily, just rolling over a log, construction goes quickly and costs less. That is why, despite advertising from neighbors, not many people want to put Isover in the walls of the bathhouse - especially those who saw it in the process of use: even with a dry beam, the insulation turned out to be 2/3 wet.

Also, similar synthetic materials often serve as a dangerous source of phenol. So, let's conclude: mineral wool in a compressed state does not remove moisture at all, and Izover, if it is not closed with a vapor barrier, completely turns into a sponge. The decision is yours.

Option #3 - polyurethane foam

Used as an interventional insulation and polyurethane foam. It is valued for the following properties:

• Fast technological installation.
• Good adhesion, thanks to which the beam sticks together tightly. When drying, it will not twist, and the steam room will not warp.
• Foam seals corners in a log house much better than moss or tow.
• The hardened one-component foam is not flammable and does not emit toxins, which, however, cannot boast of a multi-component one.
• The process of caulking after foam is quite simple.

But for all its advantages, foam as an interventional insulation does not please with such qualities:

• It is not elastic, which may cause microcracks over time (and a tree, like any living material, can slightly change its volumes).
• In winter, it does not tolerate cold - it crumbles.
• Low resistance to ultraviolet best. Over time, the sun turns to stone and crumbles.
• Not environmentally friendly enough.

And, note, polyurethane foam as an interventional insulation is used relatively little today, and therefore many other negative consequences of such insulation are not yet known. But the foam itself is also used as interventional insulation in such an alternative:

• Option number 1. The beam is laid in half a meter, and after the construction is completed, they are foamed. So it supposedly dries faster, and then the remaining wide gap can be foamed. Quick, airtight and no need for caulking. From the inside of the bath, the cracks are caulked with a linen rope.
• Option number 2. Before applying the foam, allow the bath to sit completely on the tow. After all, the settlement of the building occurs due to the shrinkage of the beam itself - and this is at least a year and a half. After that, a 5 cm gap is punched in the tow and a groove is foamed, and, finally, they are protected with a sealant along the seams.

As for the choice of foam brand, Macroflex Pro is the most suitable for this purpose. In a word, there are a lot of materials, and, as they say, how many people - so many opinions. There are also bathhouse owners who built their steam rooms ten years ago and are quite satisfied with Izover as a sealant. They argue that after the rains the timber will be wet in place of the insulation, regardless of the type of the latter: is it moss, or modern material. And the main advantages become a decisive factor: it is cheapness and ease of construction of styling. It is only important not to take the cheapest Izover (it is also called Chinese) - you can really get poisoned from it.

What is suitable for the walls of the bath?

For a bath, you can use only that interventional insulation that allows moisture to pass through itself, without accumulating it at all - these are all materials with a capillary fiber structure. Moss, jute, linen and some of their derivatives. Yes, only natural materials have such properties! And all synthetic moisture always accumulates, which is why the tree then rots, and the seams are not ventilated at all.

Experienced builders, behind whom there is more than one wooden bathhouse or house, are advised to choose interventional insulation not according to advertising, and not according to the success of their neighbors, but exclusively for each specific case. Somewhere, foam plastic is really needed - there are such construction technologies, but for most buildings it is completely unsuitable.

So, what you first need to pay attention to is the density of the insulation. For massive baths made of profiled timber, a heater thickness of 3-4 mm is sufficient if its density reaches 300-400 g / m2. But for steam rooms made of heavy logs, this indicator is already different - 4-5 mm, and the density should be at least 500-600 g / m2. For a bath-house with two floors, focus on 8-10 mm thickness and 700-800 g / m2 density. But where problems can arise: if the sealant has a density of 300-400 g / m2, but at the same time it was put in 6-7 mm, expect “bald spots” soon. Reliable insulation will not work here. If the sealant was applied to 5-6 mm, but at the same time its density is from 700-800 g / m2, this is already too “stuffed”. So the material will not be able to evenly fill all the possible irregularities of the bars after shrinkage of the building.

So what insulation should you use? It depends not only on whether you bought the wood raw or dry, but also on the processing of the wood itself. So, for a bathhouse made of logs and profiled timber, such natural materials with a layer of 5-10 mm are suitable for you:

• Linen jute;
• jute felt;
• Linen felt.

And for a chopped bath, use 10-15 mm each:

• Linen felt;
• jute felt;
• Construction tow, sold in bales;
• Tow tape linen or jute;

That's all the subtleties. Understand this issue well before building a bath - the quality of its walls directly depends on this!

Mezhventsovye joints and slots are available in all wooden buildings, this factor becomes a disadvantage only if the construction is treated without due attention. When using high-quality building materials and following the rules of construction, the size of the through intervention gaps in the log house does not exceed 2-3 mm, when using a profiled beam, there should be no through gaps.

The sealing of interventional joints and cracks with insulation is called caulking of seams. The complexity of this operation and the cost of consumables are much lower than the cost of building a log house, this circumstance should not be the reason for neglecting the warming of the log house. If you caulk the walls incorrectly or choose poor-quality material, you can ruin everything that has been done: the house will be blown and lose heat, moisture can accumulate between the crowns, fungus will appear and microorganisms will multiply. In winter, the house will be cold, in summer it will be humid, the facade will turn black and lose its attractiveness. Living in such a house will be uncomfortable.

Mezhventsovye cracks are formed in a natural way, their size depends on the quality of the building material and the method of laying the crowns. With shrinkage, the gaps between the crowns open, cracks appear. A beam with excessive moisture can twist with a screw, in which case the gap between the crowns can be 10-15 mm. The main mistakes in felling a log house are:

• In corner locks, the crowns are excessively fixed and prevent shrinkage,
• Incorrect casing of windows and doors,
• Errors in the choice of the size of dowels (dowels), the diameter should be 2-3 mm smaller than the mounting hole, which ensures free mixing of rows during shrinkage,
• Using metal fasteners, wood squeezes out metal staples and nails, and bumps form.

An important role is played by the qualifications of builders, if you hire a team of self-trained builders from Central Asia, through intervention gaps can also appear in a log house made of profiled timber.

Interventional insulation must meet a number of requirements:

• Reliably caulk interventional joints and cracks, prevent the penetration of outside air into the building,
• Compensate for processes associated with natural changes in the geometry of lumber. Throughout the entire period of operation, the structure made of wood "breathes", the dimensions of the beam 150x150, depending on the season and weather, can vary by 1-3 mm,
• Absorb atmospheric moisture flowing between the crowns,
• Ensure internal temperature and humidity balance, the material must have low vapor barrier properties.

In addition to the listed properties, the insulation must be environmentally friendly, have a service life commensurate with the operating time of the building.

Overview of thermal insulation material

All of these requirements are met by natural heaters, attempts to develop a synthetic material with similar qualities have not been successful so far. Insulation is produced in the form of tow, natural felt, batting and rope (rope). As a basis they use: linen and jute fibers, sheep wool and peat moss.

1. Flax fiber occupies a leading position in the market of natural insulation, the fibers are obtained from the stems of the plant of the same name, the stems are crumpled and fluffed on scutching machines, dust and broken fibers are removed by combing, and calcined to protect against microorganisms. The fibers have a length of up to 300 mm, are soft and elastic, do not split. Linen material is used in the form of loose and tape tow, flax wool, braided rope (rope). Flax fiber caking, within a few years after the completion of construction, interventional gaps must be periodically fumigated.
2. Jute, exported from the countries of South Asia, surpasses flax fiber in terms of price-quality. The fibers have a length of up to 500 mm, are rigid, do not break or cake. It is used in the form of tape tow, batting and felt. Rigid fibers create air microchambers, which are an attractive environment for insects and microorganisms.
3. Linen-jute material consists of flax and jute fibers in various proportions, jute fibers create a frame, and flax fibers fill the formed cavities. It is produced in the form of batting and felt, according to experts, it is the best interventional insulation for timber buildings.
4. Sheep wool felt is made from recycling waste, the material is elastic, the fibers straighten out after laying and evenly fill all the free space. The material is environmentally friendly, well absorbs excess moisture. Wool is a breeding ground for moths, this disadvantage is parried by treatment with mineral salts.
5. Peat moss is the most affordable and cheapest material, it enters the distribution network in bundles, resembles cotton wool in consistency, moss can be prepared independently. The material is a natural antiseptic. Moss is laid between the crowns with a margin, the edges of the material protrude from the cracks, which gives the facade an unpresentable look.

For centuries, hemp has been considered a traditional interventional insulation in Russia - hemp fibers, due to restrictions on the cultivation of hemp, hemp tow is produced in small batches.

Insulation for the house from cut timber

Linen and jute tow and batting, peat moss are used as interventional insulation for log houses from edged timber.

Moss is used to insulate baths and ancillary buildings. For a residential building, linen or jute material is better suited, strips of batting or tape tow are laid between the crowns, corners and irregularities are caulked with tow. After shrinkage of the log house, an additional “finishing” caulk of seams is made from the outside and inside.

On the question of which material is better, experts do not have a unanimous opinion. Jute fibers are more resilient, while linen fibers are soft and elastic; linen is better to use as tow. When building from edged timber with roughly processed layers, it is recommended to use jute batting, for a log house from planed timber - linen insulation.

The best solution when choosing an interventional insulation may be batting "len-jute", when building from a three-sided beam or a beam-carriage, the interventional seams are additionally caulked with a linen rope with a diameter of 20 mm.

Mezhventsovy heater for profiled timber

Houses made of profiled timber do not require caulking of interventional seams with tow; for insulation, a material with a tape width that repeats the shape of the groove is used; in addition, this layer acts as a sealant. Manufacturers produce interventional insulation for the profile of any timber, the thickness and width of the material depend on the shape of the profile and the size of the timber. When purchasing a professional beam for building a house, they immediately purchase a set of interventional insulation. In the profile of the blanks from the composition of the house kits, the insulation is laid in an industrial environment.

As a heater for profiled timber, natural felt made of jute, sheep's wool or "len-jute" is used. After the construction of the log house or the assembly of the house kit, to eliminate the flaws, a selective “finishing” caulk of the seams with linen tow is made.

Do-it-yourself finishing caulk

After holding the log house under shrinkage, they carry out the finishing caulking at home. In the process of shrinkage, the previously laid layer of insulation is deformed, voids can form in the inter-crown cracks, and vertical cracks can form in the corners of the log house. The operation is performed from the outside and inside. Caulking is a labor-intensive process that requires diligence and attention, the main tool is a wide chisel, wooden or rubber mallet. In order not to violate the integrity of the fibers, it is better to blunt the chisel. The operation starts from the lower crown along the entire perimeter, after the completion of the caulking of the first crown, they move on to the second, etc.