Log buildings have their origins from ancient times. Wood is the most warm material for building a house or bathhouse. In addition, it is natural, safe and environmentally friendly.
But after the construction of the building, it is necessary to complete one more important procedure- caulk log house. Why do you need to do this?
In the old days, log houses were caulked with moss. In those days it was the most reliable and available material in order to insulate your home.
Read also: How to use aluminium foil for insulating a bath
IN modern world the range of insulation materials that can be used for caulking a log house has expanded significantly. This includes the following materials:
But jute should not be confused with jute fiber. They are completely different in appearance, price and quality. The jute tape is soft to the touch and very pliable. It is convenient to use it for caulking around doors and windows. Sometimes it is laid on damp beams.
Jute ribbons can be found in skeins of different thicknesses and widths. Most craftsmen prefer caulking with jute, because this is the easiest and cleanest way to insulate a log house. And since it is laid directly on the frame, the work proceeds much faster.
Caulking is often done with your own hands. This is done in 2-3 stages. And this process can be considered very important in the construction of a house or bathhouse.
The first time caulking is done immediately after the house is assembled. But for the seams to be airtight, the first insulation is not enough. After a short amount of time, the log structure dries out and sags. As a result, new holes appear. IN winter time heat escapes through them, and the outside or inside of the building becomes covered with frost. And excess moisture is not good for a wooden structure.
Therefore, 1-1.5 years after the timber has dried out and sagged, it is necessary to re-caulk it. The third time the log house is caulked immediately before finishing the walls, when the house is completely dry and settled, after about 3 years.
Caulking of a log house can be done in two ways: stretched and set.
It must be remembered that caulking must be carried out correctly, starting from the very lower crown along the entire perimeter, gradually rising upward. And this procedure is carried out in parallel outside and inside. Because if you caulk one wall, the structure may become deformed. The same thing will happen if you caulk only the outside.
It is also necessary to remember that you should not carry out any finishing works inside until caulking is completed.
Read also: How to make forced ventilation in a bathhouse
Particular attention should be paid to caulking cracks in the corners of the house.
If you carefully select the material for caulking and carry out all the work correctly, then your log house will serve you for a long time and will make you happy. Happy construction!
How can you caulk a log house?
Moss
Jute
Tow
At what stage can you start caulking a bathhouse?
How to calculate tow for a bathhouse
Caulking technology
Simply laying a frame when building a bathhouse is not enough - you will definitely need to caulk the bathhouse, that is, close the existing cracks and cracks formed after the wood has dried out.
This article will discuss how to caulk a bathhouse.
The caulking of the bathhouse frame is needed so that it loses a minimum of heat. It is very important to use a well-prepared log house, lay it correctly and do not forget to install inter-crown insulation.
What to choose as insulation - moss, tow or jute - is up to the owner to decide, but it must be present.
The insulation is placed in two layers as follows:
It is worth keeping in mind that when laying moss or tow, tapping such material is not required.
If you hit it with a hammer or an ax handle, the moss fibers are torn, and dents appear on the surface of the wood, which after some time can cause the appearance of rotting zones. It is recommended to compact the fibers only by pressing with the palm of your hand. Excess elements in the moss simply need to be removed.
If, when deciding on the best way to caulk the frame of a bathhouse, the choice fell on tape insulation, then you can fasten it with a construction stapler.
In this case, it is important what to pierce the bathhouse with, since it can cause harm to the material.
Damage to the wood from the stapler will be minor, but this will allow the material to be firmly fixed. It is best to lay out insulated crowns together so that the log can be taken from both sides and slowly lowered without damaging the insulation.
There are natural materials for caulking and artificial ones.
The first include tow, hemp, jute, moss, and so on. The latter include industrial sealants. Sealants are easier to work with and apply quickly. As a rule, in order to reduce their consumption, a cord is laid in the inter-crown gap, and the sealant, which is distributed with a special spatula before hardening, is applied on top of it.
However, sealants have a number of disadvantages:
To prevent this fact, it is better to purchase elastic sealants.
You can learn more about how to operate the sealant by watching the available video material. A simple tablespoon is perfect for distributing the sealing agent.
If, when determining how to caulk a bathhouse, you chose a sealant, then carefully study the instructions and make sure that it can be used with exactly the type of wood from which your log house is made, that it is suitable for your region, and also has all the necessary characteristics.
It is advisable to use a synthetic sealant for a log bathhouse if it is used to close caulked cracks. After double caulking the log house with tow, moss or jute, wait until the log house finally settles and reaches working dimensions.
Each of the natural materials for caulking has its own positive and negative qualities, and preparatory measures are required in any case.
Moss is considered the most common, time-tested material for caulking. It has been used for hundreds of years. Currently, there are many other materials, but they all have slightly worse characteristics. True, new materials are easier to operate, and they also have such positive qualities as antibacterial properties and special resistance to rotting.
Before caulking a log bathhouse with moss, it must be dried and soaked right before use. This action will give the moss fibers elasticity. The moss is laid out in a layer and leveled so that its ends hang down on both sides of the beam. After all the logs have been laid out, the excess moss fibers are shortened, and what remains is wrapped and tucked into the cracks.
Thus, the first stage of caulking the log house is carried out. Further stages of caulking will be continued after a year and a half.
IN Lately Builders are increasingly asking the question of how to caulk a bathhouse with jute. Given that we mean rolled material. Jute fiber has excellent thermal insulation properties; it contains natural binder resins. Jute is practically not afraid of moisture, and very rarely becomes unusable due to rotting.
Even in conditions high humidity it doesn't get wet.
Jute comes in several varieties:
During the production of this material, the fibers are not torn, but combed, aligning them in the desired direction. This preparation of the material allows it not to lose all its properties. However, jute is not very convenient for caulking, because it is hard and has a low density; caulking has to be done several times due to the material drying out, the impossibility of obtaining a tight seam the first time, and birds pulling it apart for nests.
This material is based on 90% torn jute fiber, and is supplemented with 10% long flax fibers. The result is a dense and flexible material that is much easier to work with. But if it has a short fiber length, it may get confused and fall out. When choosing jute, you should choose a material with a fiber length of at least 20 mm to obtain maximum elasticity. Short material will not have the necessary properties, it will either fall out or the wind will blow it away.
Another disadvantage is the fact that moths can appear in it. In this regard, it is recommended to impregnate such material before installation with a composition against moths and against rotting.
This material is of interest to many builders, but it also has disadvantages, such as a tendency to rot and moth damage. That is, like the previous material, this one also needs to be treated with mixtures against rotting and pests.
This material is waste generated after the primary processing of natural fibers.
The logs are caulked with jute, hemp and flax tow. The properties and quality of such material are determined by the raw materials, the length of the fibers and the level of their purification. During production, tow is pressed into blocks. To use it, you need to pull a strip of material from the block, twist it into a rope and place it in the seam.
Although, it is easier to use tow sold in rolls.
In general, tow is not very convenient to work with, since it is very difficult to get an even seam. When caulking a log house, due to the high rigidity of the material, it is difficult to obtain a tight seam from the first approach. We have to resort to a repeat process.
If you decide how to properly caulk a bathhouse by choosing between moss and jute tow, then you can confidently say that it is better to choose moss, since it does not harbor fungus and bacteria.
If the frame was laid on moss or tow, pieces of material of various lengths protrude between the crowns.
In this case, you can begin the initial caulking: trim off the excess fibers, and hide the rest in the seams. You should be careful and take your time, adhering to the rules of caulking. If the log house was laid on tape insulation, then further operations are not necessary.
The first caulking is carried out about 6 months after the construction of the log house walls. During this period, almost all the moisture will leave the logs, new mother-in-law will be visible, and most of the crowns and corners will shrink.
After this, you can begin installing doors and windows.
Further caulking is carried out after 12 months.
During this time, the log house will be completely stable, so that all found defects can be eliminated. Based on the selected material and the quality of the work performed, you may need a new caulk in about 5 years. Sometimes, due to negligent construction work or, if insulation was not laid between the crowns, the caulking has to be repeated several more times, every year.
Before caulking a bathhouse with tow, you should decide on the required amount. Tow compresses quite well, so it is consumed quite heavily. Perhaps no one can say the exact number. This is because there are a lot of nuances that influence this: the material of the log house, what grooves are cut into them.
If the grooves were made manually, then, often, the consumption of tow will be large.
In addition, consumption increases if a sanded log was used rather than a rounded one. It will go to the timber less material, although in this case its quantity will be determined by the parameters of the timber, the depth and number of cracks that appeared during the drying process.
Before caulking the log house of a bathhouse, you need to study the basic rules of this process.
In fact, caulking a log house is quite easy, but it takes a lot of time, and you also need to be patient. For a bathhouse with dimensions of 5x4 m, one person will need about 10 days, spending 7-8 hours daily.
At the same time, you should not overdo it when laying insulation, since this fact leads to the fact that the log house becomes 15 cm or more higher.
The basic rules of caulking include the following points:
First, the outer part of the building is processed, after which they move on to the process of caulking from the inside. Only after this can you move on to the next crown.
You can resort to any tool as needed. The process is carried out in stages - after the meter is processed, they move on to next section.
Like any other part of construction work, caulking requires certain skills from the master.
Based on the fact that there will be quite a lot of such procedures, after some time you will definitely develop them. Over time, along with which you gain experience, you will notice more and more new inaccuracies that were made on initial stages works
You can eliminate them without much difficulty, bringing the work to almost perfection. Actually, those who do nothing make no mistakes, so caulking a log house with the proper quality is possible even without sufficient experience.
As for caulking a log house made of rounded logs, there are advantages and disadvantages. It would seem that the log house is also made of wood, what differences could there be other than its picturesque appearance and simplicity in the design process. The fact is that rounded logs of log houses are more susceptible to the influence of environmental factors than log houses made from ordinary logs, since the structure and integrity of the logs are damaged.
The technology for caulking log houses made of rounded logs does not differ significantly from the insulation of conventional log houses with tow, but there are still some differences:
Therefore, it is best to invite a professional to do this work. After carrying out high-quality caulking of a log house made of rounded logs, the insulation roller - jute tape or flax wool - should resemble punching with flax rope or jute rope.
When caulking, special attention should be paid to the joints between rounded logs, since the most vulnerable places in such log houses are the joints between logs in corner locks.
If they are not properly caulked, in winter they may cause big problems associated with heat loss.
Cold air will penetrate into small, at first glance, corner joints and cracks, significantly lowering the temperature in the house, and identifying such places is quite difficult. That is why such stringent requirements are imposed on the caulking of a log house made from rounded logs.
Even the smallest cracks and crevices must be filled with insulation as tightly and efficiently as possible, and caulking must be done not only outside, but also inside the log house. Although, in high-quality rounded logs there are almost no gaps left, neither outside nor inside.
Roller caulking is considered to be the most optimal for a log house made of rounded logs, since its quality and efficiency are much higher. To check how well it is carried out, it is enough to determine its rigidity.
It should be hard to the touch and cannot be pulled out with your hands, even if you try very hard. If the caulk passes this test, it means that the work was done with truly high quality, the house will retain heat well, and even with temperature changes, the insulation will not dry out and fall out.
The greatest advantage of rounded log houses is that after professional caulker the house does not require any additional insulation.
The tree has long been known for its excellent thermal insulation properties, but for the full experience of warmth, the village must work hard.
It is necessary to carefully seal the cracks between the logs, thereby insulating the rooms from the freezing ice.
Unfortunately, without this additional procedure it is impossible to achieve a normal microclimate in a wooden house.
Our ancestors came up with effective method fight against uninvited “fickle” guests. To do this, write down the rope with your own hands: after the trailer structure in the house, the room is tightly packed with insulating material on a natural basis (for example, moss, hemp, yarn).
Then wooden cottage was completely protected from the weather, and the thermally insulated seams adequately played the role of a protective “jacket”.
Until now, the ancient technology is still in process, only the tools and materials for the work have been improved.
Builders systematized this process by developing two algorithms for constructing poles.
Wooden house construction is now much simpler because workers do not perform manual initial processing of the logs and do not receive sanded, dry and adapted dimensions of the building material. Whereas an agricultural family previously took several years to build on a log plan, a modern, elegant eco-home takes literally a few weeks to grow.
Let's look at all the construction methods wooden house in a wooden house and indicate whether each of them needs manure.
This is an old way to build wooden house, which is still popular among enthusiastic admirers of antiquity.
Its complexity lies in the long, problematic selection of approximately identical thick trees and subsequent manual adjustment of the required size.
Not many people choose this kind of “hard work”, but in the end they end up with an exact replica of an ancient Russian farmhouse.
Craftsmen involved in logging must have a good knowledge of all carpentry work.
Traditionally, on the outside of the house, the facade remained wavy, but for interior walls the beams were processed so that the rooms had smooth smooth surfaces.
During construction, workers are forced to constantly compensate for curtain curtain distortion due to the non-flying shapes of the workpiece. A number of repairs and functions form a natural material that results in the interior allowing for increased shrinkage (up to 25%!), so they must be especially precise with insulating gaps.
Konopatka's diary is carried out twice and, if possible, even three times: the first time - immediately after the construction of another - 1-1.5 years after the preservation of the field building, and the third - 3 years after the completion of construction.
The sticks used during operation are installed at the factory.
On lathes, the workpieces are secured using a fastening mechanism and then crushed by a treadmill to a certain depth. In addition to automatic fitting, the material is carefully dried and treated with a protective impregnation (against insects, fire and water).
It gives full round logs the same diameter in which the assembled grooves are often cut at the factory.
Assemble items easily, there is no need to constantly adjust the crown to each other, so that workers involved in assembling the house may not be fully proficient in carpentry skills.
Handbag advocates have a rounded diary that has lost its geography. This means that, depending on the perfectly smooth workpiece, you may not be able to tell where north is, the more stress-resistant side and some of the stronger layers of wood are lost.
But these shortcomings are not so painful for the reputation of building materials, since they provide a record speed for the construction of a wooden house.
This hive is carried out only 1-1.5 years after its conservation, since the building is subject to slight shrinkage (6-8%).
The work slots are carefully covered with thermal insulation material, but recirculation can be completely avoided (depending on the quality of the substrate used).
To build a wooden house, special square-shaped squares are used, consisting of glued lamellas of the same thickness (2-5 pieces). The material is carefully dried and processed during the production process protective equipment and adhesives with properties that must meet strict environmental requirements (DIN, EN, 204) and water resistance (level D4).
At the factory, one side of the beam is attached to a sealing surface, and builders only need to ensure that the joints of the logs are sealed.
This significantly speeds up the process of assembling a wooden house, and low-skilled workers can also participate in construction.
Advice from the master!
Due to small shrinkage values (up to 2%), hulls with glued beams should not get stuck. The building can be immediately occupied and the walls, ceilings and floors can be decorated with decorative protective coatings.
Putting up a log house from a log or timber is not the whole task. It is also necessary to properly caulk this log house: to seal the gaps between the crowns and the cracks that form when the wood dries out. This is done so that the log house of the bathhouse loses as little heat as possible. The quality of the log house's assembly is determined by how the crowns are laid. It is important not only to cut out the bowls and grooves correctly, but also to lay inter-crown insulation between two rows of logs or beams.
The insulation is installed during the assembly stage of the log house
What it will be - moss, tow or jute - is up to you, but such a layer must be present. When building a log house, you need to lay insulation in two layers:
Please note that when using moss or tow, there is no need to “tap” the material. When tapped with a hammer or an ax butt, the moss fibers break and dents form on the wood, which are directed across the fibers. Such damage can lead, in the future, to the development of foci of rotting. It is enough to simply compact the fibers with the palm of your hand, leveling and probing the layer; if you come across large foreign objects (cones or sticks are often found in moss), simply remove them.
Laying moss when assembling a log house
When using tape insulation, you can fix it using a construction stapler - damage to the wood from the staples is minimal, and the material is held securely. It is advisable for two people to lay the “insulated” crowns so that they can take the log from both ends and lower it so as not to move the insulation.
How to caulk a log bathhouse
All materials for caulking can be divided into two main categories: natural (tow, hemp, moss, jute, etc.) and industrial sealants. Sealants are applied faster and easier to work with. Usually, to reduce the consumption of sealant, a cord is placed in the gap between the rims, and only then a sealant is applied on top of it, which, when wet, is leveled with a special spatula.
When caulking, it is not appropriate to have a spatula-scalpel at hand. Working part The tool is made of hardened carbon steel
Synthetic sealants have a number of disadvantages:
Elastic seam sealant for wood from EUROTEX
The video shows how to use Eurotex sealant.
As shown in the video above, you can use a regular tablespoon as a tool to level and remove excess sealant.
If you decide to use one of the sealants, carefully read the instructions and description, make sure that it is compatible with the type of wood from which the log house is built and can be used in your region ( temperature regime) and has the necessary qualities.
The use of sealant is justified in the case when it is used to seal caulked cracks: after caulking the log house twice with tow, moss or jute, wait for the log house to completely shrink and acquire operational dimensions, after which a cord is laid in the seams, and then the sealant is applied.
Natural materials for caulking also have their own advantages and disadvantages, in addition, each of them needs certain training.
The most proven material for caulking a bathhouse is moss. It has been used for centuries. Today, many other materials have appeared, but they have not surpassed moss in terms of characteristics. With new ones (especially tape materials) more convenient to work. This is undeniable, but the qualities of moss remained unattainable for them. Chief among them is the ability to resist bacteria and high resistance to rotting.
Not aesthetically pleasing, but practical
The moss is first dried and then wetted again before use. This restores elasticity to the stems. The soaked moss is laid out in an even layer so that its ends hang down on both sides of the log/beam. After completing the collection of the log house, too long stems of moss are trimmed, everything else is tucked in and tucked into the cracks of the log house - the initial caulking of the log house is performed. This is followed, after six months and after a year and a half, by repeated caulking.
Increasingly in construction wooden baths and jute is used in houses. And not just jute fibers, but rolled material. Jute fiber has good characteristics: it has good thermal insulation properties, due to the large amount of lignin - a natural resin that serves as a binding element - it is practically not subject to rotting and has low hygroscopicity. Even with high humidity, the jute remains dry to the touch.
Jute insulation can be of several types:
Tow is waste that is generated during the primary processing of natural fibers. For caulking log houses, tow made from jute, hemp and flax is used. The characteristics of the material and its quality depend on the source raw materials, the degree of purification of the fibers and their length. Construction tow is pressed into square blocks. For use when caulking log houses made of common block a strip of material is pulled out, twisted into a rope and placed into the seam. Combed tow, which is sold in rolls, is more convenient to use.
Tow for a bath
It is inconvenient to work with such material: it is difficult to achieve a uniform layer when used as inter-crown insulation, and for caulking a log house, tow is excessively rigid, which is why it is almost impossible to achieve a dense filling of the seam the first time and you have to periodically re-caulk it. If the choice is between moss and jute tow, then we can definitely say that moss is better for a bath - it has the ability to inhibit the development of putrefactive bacteria and fungi.
When to caulk a bathhouse
The log house is assembled, when is the first time you can caulk a fresh log bathhouse? If the log house was assembled with moss or tow, then remnants of material stick out between the crowns different lengths. In this case, you can perform the initial caulking immediately: trim the overly long fibers, tuck them inward and tuck them into the seams. There is no need to be zealous about this. This is preliminary work, the purpose of which is to remove fibers. But this must be done following the rules of caulking. If the log house is assembled on tape insulation, nothing needs to be done.
Bath after initial caulking
The first “serious” caulking is carried out approximately six months after the collection of the log house. During this time, the logs/beams will lose most excess moisture, new cracks will appear, crowns and corners will mostly “sit” in place. At this time, the first caulking is carried out. After this process, you can install doors/windows.
The second caulk will be needed about a year after the first. A year and a half has passed since the construction of the log house, the log house has become stable. Now all seams and cracks are checked, all defects are eliminated. Depending on the material and quality of work, it may be necessary, in another five years, to caulk the seams again. But there have been cases (usually this is the result of the work of “shabashniks”) when caulking errors are corrected for several years in a row. Most often, this need arises if the log house was built without inter-crown insulation.
How much tow do you need for a bath?
Any natural material for caulking, it is compressed many times during installation and a large amount of it can fit into a log house, even with good interventional insulation. No one can say exactly how much tow is needed for a bathhouse: it also depends on what material the log house is assembled from and how the grooves are cut out in the logs. At manual chopping grooves usually go away more material. Also, a sanded log requires more material compared to a rounded one. Less is required for a log house, but even here the amount of tow or moss that will be used to seal the cracks depends on the accuracy of the geometry of the beam and the depth/number of cracks that appear during drying.
Caulking rules
Caulking a log house is not a very difficult task, but it is long and tedious. Everything needs to be done thoroughly and slowly, so it takes a lot of time - it took 10 days to caulk a small 5*4 bathhouse (one worked for 7-8 hours).
The main thing is not to overdo it in the efforts made when hammering in the insulation, which can lead to the log house rising by 15 cm or more.
Rules for caulking a log house:
Like every business, caulking requires certain skills. Since there will be more than one such procedure, you will eventually gain skills. As you gain experience, you will notice the mistakes that you made at the beginning of your activity - this will be your chance to eliminate them. Actually, it is not the gods who burn the pots, but it is possible to caulk a log house more or less efficiently even if you have no experience.
Wooden houses look beautiful. They are warm because during construction, insulation is placed between the crowns of the logs. But after shrinkage, cracks may appear different sizes, cracks, which spoil its appearance and make it cold. In addition, cracks can become a place for rot and mold to appear. To prevent this from happening, after the structure shrinks, the log house is caulked with moss or other material.
A house or bathhouse made of logs shrinks in the first 2 years after construction. In the first year, the shrinkage of the log house reaches up to 20 cm. This factor should be taken into account when designing a house. This is due to loss of moisture and drying out.
During shrinkage, loose joints appear in places where everything was previously sealed. To eliminate this, resort to caulking. It is necessary to take measures to seal the cracks so that there is no heat loss or drafts. These activities are carried out only after the structure has settled.
Intercrown insulation - material for thermal insulation of seams wooden houses. Insulation is often made from natural materials, which are distinguished by their environmental friendliness and ability to “breathe”, which provides sound and heat insulation. To fill the cracks, the following materials are used: tow, felt, mosses (red, white). Each has advantages and disadvantages.
Type of material | Characteristics | Advantages | Disadvantages |
Tow | Used for primary caulking, after shrinkage of the house. They are made from flax fiber in 2 types: in bales, rolls (tape). The latter is more convenient for work, better in quality, soft. Before laying, it must be treated with a special antiseptic solution to repel insects that feed on tow fibers and wood. |
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Jute | They are made from linden wood, and are produced in the form of ropes, fibers, and tapes of different thicknesses. Apply simultaneously for the first, repeated caulking. More often it is brought from abroad. The material is soft and plastic. Ropes are more convenient to use for work carried out after shrinkage. |
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Moss | The following types of mosses are used: sphagnum, cuckoo flax, swamp red. Natural material, having antiseptic properties. Assembling it yourself late autumn you can save money. After collection, they sort it out, remove all debris, and lightly dry it. Do not dry it too much, otherwise it will break during operation. Before work, the moss must be soaked in a special solution (add 0.5 liters of oil and 0.25 kg of laundry soap to 10 liters of water) to facilitate installation, but it should not be used when it is very wet either. The sphagnum must be fluffed up a little and placed across the log so that its fibers hang down by 50 mm (they are then driven into cracks and crevices). |
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Each owner of a log house independently chooses the type of material, taking into account the quality, financial capabilities, and availability of the material.
Before caulking, the moss is dried. However, before starting the caulking process itself, it is wetted, otherwise it will crumble in your hands and it will be impossible to do any work with it. Caulking with moss is carried out with special tools: caulking, mallet.
The caulking tool is made from the same wood as the log house. This is done so that the tool and the log have the same hardness upon contact. Then there will be no traces left on the log house. A wooden hammer is used to strike the caulk, which makes it possible to push the moss into the crack with force and tightly fill the space.
Caulk with moss begins from the bottom row, passing along the perimeter. This approach avoids distortions. The crown passes completely from the outside to the inside. Before use, “Kukushkin flax” is formed into 100 mm strips, laid parallel to the log, and cracks and cracks are sealed using special tools. White moss Before work, fluff it up a little. The laying is done perpendicular to the log with hanging fibers on both sides of the log by 100 mm, which are then pushed into the gap with tools.
Caulking moss at a log house is not a difficult job, but it requires care. We must ensure that the house does not warp, that the seams are complete, that the logs do not fall out or tear apart from each other. What is needed in this matter is perseverance, time, and patience.
On modern market You can find various materials for insulating a wooden house. Among the many traditional moss, wool felt, flax tow. Of course, their qualities have been confirmed by time, but we will not dwell on them in more detail. Let's talk about modern material– jute. How to properly caulk a log house with jute, how much money will have to be spent on it and in what order to do it, you can find out by reading this article.
By neglecting the stage of caulking a log house, we significantly worsen it thermal characteristics. When wood dries, it cracks and shrinks in size. Between the links of the log house, cracks and voids form, through which cold air enters the premises. It's not so scary when summer temperatures, but in winter period heat getting on minus temperature, frost will settle on the walls, and this is excess moisture. The wood begins to rot and there is increased moisture in the house. The construction of a house from timber is always accompanied by double caulking.
Our great-grandfathers used moss and flax as caulking. Some passed on the secrets of what and how to caulk from father to son. But these materials have a number of disadvantages, which faded into the background with the advent of sealants and putties.
Do not forget that wood is a natural material and houses are built from it by those who love everything natural and environmentally friendly. Using artificial putties and sealants as insulation violates environmental friendliness. What to do if you want to get high-quality caulk and not harm the climate? Caulking the log house with jute comes to the rescue.
Jute is a material made from shrubs of the linden family. Which in itself is the closest thing to wood and a frame made from it. It came to Russia from China, India and Kazakhstan. Jute has been successfully used there for more than one century. Jute fibers are unique in that their strength is higher than that of fishing line, while it has excellent spinning properties and low hygroscopic qualities. So, in a room with a humidity of more than 80%, the material will absorb only 20% of the moisture, but will be dry to the touch.
Sellers do not differentiate between jute and jute felt, but this is a mistake. Jute felt does not have all the qualities of jute and costs less. Although many manufacturers sell felt under the guise of jute. Jute felt consists of 70% jute and 30% flax. Sometimes sellers call it “flax wool,” but this is not true either. To compare these materials, here is a table with their quality characteristics:
Why is there such a big difference between seemingly identical materials? It's all about a special polymer - lignin. IN good insulation its amount should not be lower than 20%. Lignin binds the fibers in wood together making them waterproof. And when flax is combined with jute, the lignin composition is only 2%. This is why water penetrates jute felt so easily. And damp material loses all heat-retaining properties and becomes a source of rot and mold. Therefore, it is useless to caulk them.
The density of jute is also comparatively higher than felt, which affects its uniformity when folded and, consequently, its heat retention. The airflow of walls caulked with felt is 70% higher.
These two insulation materials can be distinguished by color and touch. Jute has a pleasant texture with a slight roughness, and the color is always golden or light brown. Jute felt is gray in color and feels harder to the touch.
You can see jute in more detail in the video below:
Caulking with jute has a number of advantages:
There are several types of this material that can be bought in Russia. Indian is considered the highest quality. They produce both tape jute insulation and cord and harness, which are also used in inter-crown caulking at home. The latter options look more decorative and do not require additional finishing.
Caulking with jute only at first glance seems a simple task. In fact, it is painstaking work. Various articles and videos come to the aid of beginners, which tell in more detail about the stages of work. You can watch one of these videos right now:
There are two ways to caulk crowns at home:
This method is suitable for caulking walls with barely noticeable cracks, for example, building a house from profiled timber. The insulation is taken in pieces and pushed into the cracks with a special spatula. In this case, part of the insulation (4-5 cm) should remain hanging. A roller is made from the remainder, which is used to caulk the cracks using a special chisel.
This method is more suitable when the cracks are deep and wide. A bundle is rolled up from the insulation or a ready-made one is taken and, using a chisel or caulk, hammered into the holes. It is better to roll the tourniquet straight along the way, this way you can control its thickness. The gaps are different everywhere and the seam will look neater.
With this caulking method, the insulation is first hammered into the upper parts of the cracks, then into the lower ones. For greater accuracy, at the end the seam is sealed with a special road sealer.
The price of jute is directly related to its thickness, density, shape (roll, jute cord) and batch quantity. Purchasing more than 5,000 m reduces the cost by 10%, more than 10,000 m by 15%. We have analyzed average price for jute and present it to our readers in the form of a table:
Width, mm | Price, rub./m linear | ||||
---|---|---|---|---|---|
Thickness 5-6 mm, density 400g/m2 | Thickness 8-10 mm, density 550g/m2 | Thickness 10-12 mm, density 700g/m2 | Jute cord, thickness 10 mm, density 450 g/m2 | Jute cord, thickness 15 mm, density 450 g/m2 | |
100 | From 5 | From 7 | From 11 | From 13 | From 22 |
150 | From 9 | From 12 | From 18 | ||
200 | From 11 | From 15 | From 22 | ||
250 | From 15 | From 20 | From 30 |
Using jute to caulk walls is very simple, and the tightness of the walls increases significantly. It is considered the most popular material in many developed countries world and quickly took his place on Russian market. Despite the fact that it appeared relatively recently, professionals and amateurs fell in love with this material. Treat walls, ceilings and floors with it quickly and easily. Moreover, using it with a one-sided bend, according to professionals, is more effective. Of course, we should not neglect flax and tow, which our grandfathers used. But let’s not deny all the advantages of inexpensive and high-quality jute.
Houses made of timber have a lot of features that distinguish them from buildings made of other materials. One of them is that after construction is completed, the house begins to dry out. This process is inevitably accompanied by a change in shape and the appearance of gaps between the crowns. These openings open the way for cold air from the street, which, when meeting warm air condensation forms from the house. As a result, mold and even rot can occur in the premises.
Shrinkage is natural process, and therefore it is impossible to prevent it. Even logs and beams that have been dried according to all the rules will certainly shrink. The only thing that remains for the owner is to fight the formation of cracks. It is for this purpose that caulking is carried out - necessary procedure, during which the gaps that arise between logs or beams are manually sealed.
For all the time that a person has been building wooden houses, he was able to compile a list of the most effective insulation materials, the best among which are natural materials:
But before you start caulking the log house, you need to prepare the selected material in a special way.
Red moss was also used by our ancestors. It has not lost its relevance in our time. If you decide to opt for this traditional material to insulate a house or bathhouse, then you need to learn how to properly caulk a log house with moss. Moss is rot-resistant and antibacterial, but if it's too wet, then after caulking the wood will begin to rot.
Very dry moss also has its drawbacks - it will not be possible to make high-quality caulk with it, since it will inevitably crumble and break. To make it suitable for use, it must be moistened. The main disadvantages of this insulation are related to the difficulties when laying it on beams. This problem is easily solved by mixing moss with tow.
Tow is one of the most popular building materials. This excellent thermal insulator is made from flax and hemp waste. Tow, like moss, perfectly protects wood from rotting.
Felt cannot be called the most suitable material for log caulking. The reason for this is that it is more susceptible to rotting than all other insulation materials and has very low strength. In addition, before use, felt must be soaked in formaldehyde or another product that can protect against moths. Otherwise, after some time you can find in the felt a large number of moth larvae that will happily eat this heat insulator.
When building houses and bathhouses from logs, they use not only traditional, but also modern thermal insulation materials, the most famous of which are jute and flax wool.
Jute is modern insulation, which is made from a shrub of the linden family. The material has mass positive qualities- high strength, density, resistance to moths and rotting, low hygroscopicity. Jute is not able to absorb wood moisture, but releases it well when the wood dries out.
In room, where is the air humidity is maintained at a fairly high level (80% and above), jute insulation will effectively perform its task. Remaining dry, jute not only perfectly protects the wood from rotting, but also insulates the log house, maintaining a healthy microclimate in the house.
In stores you can find another material with a similar name, which is often identified with jute. We are talking about jute fiber, which has little in common with jute and differs from it not only appearance, but also quality of workmanship and cost.
Jute tape is soft to the touch and very pliable material. It is used mainly when sealing the crowns of houses made of timber, as well as around doors and windows in combination with various impregnations. It is also used to seal gaps and cracks in wood and concrete. It can also be laid on wet beams.
Manufacturers produce jute tape in skeins of different thicknesses and widths. Professional builders use this material is very popular, because, according to their words, this is the easiest and cleanest method of insulation. Significant advantage This material makes it possible to quickly perform caulking, since the insulation can be immediately laid on the log house.
Linen wool differs from jute in its composition. For its production, only flax fibers are used. However, this does not prevent it from demonstrating the same performance properties as jute tape, although it is more rigid in structure. In stores, flax wool is offered in the form of rolls, which makes it very convenient for caulking in stretch.
Before you start caulking a log house, you need to resolve the issue of a log caulking tool.
For insulation log houses use devices made of metal and steel. Some owners perform this operation using homemade devices, made from a block of oak, walnut or beech.
Particular attention should be paid to the handle of the tool, which should be made of embossed rubber. The tool intended for caulking must have a non-sharp blade, otherwise there is a risk of damaging the insulation used. In addition, the tool should not have any roughness, otherwise the material may catch on them and be removed from the gap.
To fill the insulation, use a tamping hammer - a mallet..
Caulking a log house is uncomplicated technological process, which you can do yourself. This is one of important stages building a house, which involves a number of stages.
Caulking begins with sealing gaps in the walls of the house at the stage of its assembly. Primary insulation is not able to completely eliminate all seams. After all, upon completion of construction, a house made of timber undergoes shrinkage and drying out, which inevitably leads to the appearance of new gaps.
With the onset of cold weather, precious heat begins to escape through them, which negatively affects comfortable living. In the bathhouse, because of this, the temperature in the steam room quickly decreases. In addition, the heat lost at low temperatures causes the appearance of frost with outside facade. This excess moisture negatively affects the condition of the wood.
All this forces re-caulking after the walls shrink. wooden structure within 6 months after completion of construction work. During this time, the timber manages to dry by 90%. The time required for shrinkage depends on several factors - the quality of the material, the time of its preparation, humidity and weather conditions. The complete shrinkage of the structure is completed in 3 years. The final third caulking is carried out before finishing the walls, when the log house has completely shrunk.
Houses made of rounded logs differ in many respects from buildings made of logs. Due to the ideal shape and size, the gaps in the logs are very narrow. But even in this case, caulking is necessary. Although you won’t be able to do this on your own. You will have to seek help from specialists. After all, you can overdo it and fill small gaps too much. big amount insulation material, and this can cause the walls to warp.
Caulking of log houses is carried out using two main methods: stretched and set. Sometimes they are used simultaneously. Each of them allows you to use tow as insulation.
This method of sealing cracks is used for narrow gaps in a log house. A small amount of the tow is applied to the crack, and then stuffed inside using a caulking chisel. But during this operation it is necessary to leave 4-5 cm of free edge. The roller made from tow is wrapped in the remaining free edge, as if intertwining them, after which they are driven into the gap between the crowns using caulk and a hammer.
I would like to draw your attention to the fact that while twisting the roller you need to grab nearby strands. If this is not done, the roller will simply fall out of the slot. You can make sure that the caulking was done well by gently pulling the roller. The work is considered completed correctly if the roller remains in the same place. If, as a result of such actions, you managed to pull it out, this means that the gap was not completely filled.
This caulking method is used primarily for sealing large and wide cracks. First you need to prepare long bunches of tow, form them into skeins, and then cast on loops that fill the gaps. The loop should have a thickness comparable to the size of the gap being sealed. First, you need to stuff the insulation at the top of the gap, helping yourself with caulk, and then move on to sealing the bottom, using a “road builder” as a tool.
Although caulking a log house is a time-consuming process, it is worth the effort spent. If it is carried out correctly, the log house will last at least 8 years. But this work must be carried out in accordance with a certain algorithm.
When caulking a log house, you must be extremely careful, trying not to miss the slightest area. You shouldn't hit it with a hammer too often. One blow should be made per blade width. Therefore, it is best to go through the row again to avoid overstuffing the insulation.
The technology of building log houses has a lot of nuances. One of them is that after completion of construction work the house cannot be considered ready for use. After this, shrinkage occurs, which is a natural process and takes from 6 months to three years. During this time, new gaps appear between the crowns of the log house, which must be eliminated. This is why every owner needs to caulk.
In order to properly seal new cracks, it is necessary not only to choose the right caulking tool, but also insulation. Considering that stores offer a variety of various materials, it is important for the owner to become familiar with the features of each insulation in order to avoid problems both while working with the material and after sealing the cracks.
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