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What is glassine in construction. Glassine - characteristics

Glassine is a vapor barrier coating that is used in construction to protect the insulation layer from moisture. It has successfully replaced such ecological harmful materials, as only and only, containing carcinogenic tar in its composition. The production of a vapor barrier is based on the processing of roofing paper with low-melting bituminous compounds, due to which the material acquires strength and water-repellent properties.

Glassine: technical specifications

Roofing cardboard, from which glassine is made, consists of 40 or more mixtures various materials: wood, linen, cotton, etc. In the process of impregnation with bitumen and other additives, the cardboard mass is pressed under high pressure.

The resulting material has high strength and durability, it is able to withstand fairly high loads. There are several types of vapor barrier - P250, P300, P350, P400. The marking indicates the density (thickness) of the product. Manufacturers produce glassine rolls with a width of 1.025x1.05 m and a weight of 15-30 kg.

Another type of vapor barrier material is liquid glassine, which is a polymer composition. This is a universal tool that can be used for waterproofing concrete and wooden structures.

Glassine is used as a vapor barrier in the construction of buildings. The product is used as a waterproofing substrate in the construction of roofs or floors. So, when installing the roof with the first layer insulation is laid, then a vapor barrier follows, which is closed finishing material: metal profile, metal tile or slate.

The product is widely used for mounting complex structures with unusual shapes. Due to its properties - elasticity, low weight, it can be easily and quickly installed on almost any surface (walls, floors, roofs).

The material is mainly used to protect wooden structures from condensation. As a result, the wood does not deform and the service life of such coatings increases. A vapor barrier is successfully used in the construction of baths and saunas. For efficiency, the product stacked in several layers around the perimeter.

Another area of application is the protection of the foundation from moisture. The product is used in the installation of foundations apartment buildings, plinths and walls.

When installing a floor vapor barrier a layer of glassine is alternated with hot bitumen, which is laid in the last layer. Such a design for long time guarantees reliable protection from water vapor.

Installation of vapor barrier protection of basements, car garages and hinged facades is being done. The insulator finds application in the construction of heating mains, where it is mounted using clamps, wire and adhesive tape.

Before installation workplace cleared of debris. A roll of glassine is rolled out on the base and cut according to the required dimensions.

When laying, the insulator is glued to the base to ensure the tightness of the vapor barrier. The first row of the insulator is fixed to the concrete with bituminous mastic. If this is not possible, then it is glued with self-adhesive tape.

The insulator is fixed to the wood base with a stapler, while the joints must be additionally sealed with double-sided tape.

Next, subsequent rows of glassine are installed, an overlap of 15 cm is made along the edge. The seams are treated with bituminous mastic or double-sided tape. If the need arises, then the installation of the second layer of glassine is done.

Coverage needs to be checked regularly.– in case of damage, the vapor barrier is repaired.

Dismantling is not difficult, since the damaged area can be easily cut out with a special cutter or any sharp knife. Just to be dismantled top coat and remove rotten parts of the material. If necessary, replace the frame or screed and re-lay the vapor barrier.

Liquid glassine is applied by brush, roller or spray. Moreover, the treated surface does not have to be specially prepared, the composition can also be applied to a wet or dusty surface.

The material penetrates deep into the pores of concrete or wood and removes moisture thanks to the water-displacing additive. This impregnation provides long-term protection. and waterproofing. After hardening, liquid glassine resembles soft black rubber.

Advantages

disadvantages

The service life reaches 5-7 years, after which the product must be replaced, due to a decrease in vapor barrier properties.
High level of ignition, as the material has a paper base with bituminous additives.
Selection harmful substances at elevated temperatures and the appearance of a pungent odor that persists for a long time.
Decreases in elasticity low temperatures(- 40 ° C), as a result of which the structure of the product becomes fragile.
Under the influence of ultraviolet rays, glassine is gradually destroyed, so it must be periodically updated in building structures.

Despite the fact that glassine has moisture-resistant properties, due to prolonged exposure to moisture, the material may collapse. Therefore, to ensure the watertightness of structures and increase the service life, it is necessary to install ventilation.

Now in construction along with glassine two-layer vapor barrier films impervious to moisture and water vapor. They are superior in their properties to glassine, have higher strength and durability.

New generation vapor barrier materials can provide complete tightness of the structure and high level thermal insulation. However, the cost of such waterproofing films is much higher than glassine.

Therefore, planning construction works it is necessary to take into account the positive and negative characteristics of the roofing material. During its operation in without fail fire and sanitary and hygienic standards are observed.

Glassine is the most budget material for installation of vapor barrier. It can be in demand for the construction of various outbuildings on suburban areas and other objects.

Vapor barrier is necessary to prevent the harmful effects of moisture on the insulation layer structural elements building. For its arrangement in private construction, rolled material is used - glassine.

At self construction the owner of a private house has to select materials on his own. When it comes to installing a vapor barrier, the owner often wonders if glassine is suitable for this work, or is it still necessary as a waterproofing? The answer is pretty simple. The material is suitable for both types of work.

Using the example of a roofing “pie”, you can see that bituminous sheets are used as a vapor barrier for insulation from the side of the room, as well as waterproofing under the roofing. There are three schemes for laying the material, where it plays a different role.

Schemes of roofing "pies"

In this roofing "pie" scheme flat roof glassine is used for vapor barrier:

concrete floor slabs;
double layer of glassine;
thermal insulation layer;
cement-sand screed;
roofing.

The following scheme provides for the use of the material as a waterproofing of a pitched roof with a cold attic:

rafters sheathed with a solid wooden crate;
double layer of glassine;
roofing material.

In the latter scheme, glassine serves as a waterproofing and vapor barrier. This "pie" is used for gable roofs with warm attic

internal sheathing of the attic with sheets of plasterboard;
rafter system;
glassine vapor barrier from the side of the attic;
thermal insulation layer;
counterlattice;
waterproofing layer of glassine;
roofing.

From the considered schemes, we can conclude that glassine is not a roofing. Although, many are mistaken in these matters, and use the material to cover sheds and other outbuildings. Naturally, the result of illiteracy is a leaky roof in a year.

Scope of glassine as a vapor barrier material

Before finding out the scope of the material, it is necessary to understand two concepts. Vapor barrier and waterproofing are the protection of the heat-insulating layer from moisture. It can be in two states: as a vapor followed by the formation of condensate or liquid. So, vapor barrier will save from penetration to the insulation, and waterproofing prevents the penetration of liquid.

As a vapor barrier, bituminous sheet can be used in the following situations:

The bottom lining layer of the roofing pie.
Protection of the heat-insulating layer outside and inside the room from condensate. Preventing moisture penetration will extend the life of the insulation.
Condensate insulation between chipboard boards and the reinforced concrete base of the building.
Use of packaging material metal products prevents the penetration of condensate, which causes corrosion of the metal.

Glassine is well suited for vapor barrier in construction winter baths. But for the steam room it can not be used. Under the influence of high temperatures, the material begins to release bad smell with toxic substances.

Glassine refers to rolled materials and to a greater extent it is laid on top of the insulation under a hard roof covering, such as slate or tile. The elastic structure allows the material to be used on pitched roofs. Under soft roof, for example, shingles, experts categorically do not recommend the use of glassine. This is due to the difficulty of providing adequate insulation in difficult areas such as ridges or valleys. And yet, poor fixing of the substrate with the base will lead to the tiles slipping along with the vapor barrier.

Wooden structures are covered in places of contact with concrete or soil. This keeps the wood from rotting. The vapor barrier between two dissimilar surfaces prevents the formation of condensate.

Sheets are widely used as a vapor barrier in the construction of outbuildings, hinged and ventilated facades.

It turns out that glassine is still more used as a vapor barrier. It is vital to protect and increase the life of the thermal insulation layer.

What is glassine and its varieties

Glassine is cardboard impregnated with special bituminous solutions. It is produced according to two standards: GOST and TU. Such material differs in the density of cardboard and the length of the roll. For example, the P-350 brand according to GOST has a density of 350 g/m2 and a web length in a roll of 20 m. but its cost is higher.

At the moment, manufacturers offer three brands:

P-250 is resistant to moisture up to 10 hours.
P-300 will not let moisture through for 20 hours.
P-350 has a water absorption level of up to 20% by weight. Such material is used for arranging vapor barrier during roofing work.

It should be noted that of the presented grades, P-250 according to GOST is not produced at all, and P-350 has ceased to be produced according to GOST, since the material is considered obsolete and is becoming a thing of the past.

Advantages and disadvantages of the material

Before deciding to use the material for the manufacture of a vapor barrier, you need to find out all its pros and cons.

The material has the following advantages:

The main advantage that attracts private developers is low price compared with modern materials intended for these purposes.
The canvas can be called universal. It is used as steam and waterproofing, and installation can be carried out even by an inexperienced builder. Depending on the base, the sheets are fastened with staples, gluing or construction tape.
Light weight does not require reinforcement of the roofing system or the foundation of the building.
A canvas that has become unusable can be quickly replaced with a new one, of course, for this you will have to dismantle the top finishing coating.
Differs in moderate water absorption and tensile strength.

In addition to many advantages, there are still significant disadvantages:

Although glassine is resistant to moisture, it should not be laid on a wet surface;
Installation at low temperatures will lead to a break in the sheets;
The sun's rays are detrimental to the structure of the material, so it cannot be used on an open surface;
From the high temperature, bituminous impregnation begins to melt, which is accompanied by the release of toxic substances and an unpleasant odor.

After weighing all the pros and cons, before using the material, it does not hurt to get additional advice from professional builders.

Drawing conclusions

According to the characteristics of glassine, it can be seen that although it is made with the addition of bituminous impregnation, the base still remains cardboard. She is afraid of water and can only be used as a waterproofing material in rare cases.

The conclusion suggests itself that glassine is a vapor barrier. And the manufacturers themselves position this material in this way.

In terms of application, modern vapor barrier membranes and films have long ousted glassine from the market, thanks to their the best performance. Moreover, for the construction modern roofs and facades, the material does not meet the requirements. The best field of application of glassine as a vapor barrier is country outbuildings.

And some more information about glassine in the next video.

Insulation and vapor barrier

In today's article we will talk about modern and popular type insulation, which includes such an unusual material as glassine. It is difficult to imagine waterproofing rooms or roofs without this reliable vapor barrier. What is glassine, where is it used, what are the advantages and disadvantages, as well as how to work with it - read about all this below.

1 Vapor barrier of premises - what is it for?

Vapor barrier performs very important functions. The main task similar material is to prevent the appearance of condensate on the heaters that are used in the construction of floor bases or roofs. Need additional protection insulation is due to the fact that moisture has a very negative effect on it. The lack of vapor barrier will soon lead to the deformation of the insulation, the loss of key operational properties and, as a result, the destruction of the material.

Vapor barrier is used to prevent condensation on the heaters

Condensate, deeply penetrated into the structure of the insulation, significantly increases the heat conductivity. As a result, in a room initially insulated with some special material, vapors will form, as well as significant losses of thermal energy will be felt. Constantly emerging steam masses, consisting of thermal air together with water drops, negatively affect primarily the surface of the floor and ceiling. If you install a high-quality vapor barrier, then you can not even remember about such problems.

Modern vapor barrier must meet the following important requirements:

Have the necessary fire resistance and reliability parameters to ensure a high level of fire safety
Differ in a high level of moisture resistance, but at the same time, small values in terms of moisture absorption. The combination of these factors makes it possible to effectively prevent the appearance of condensate on various surfaces in room
Environmental safety - vapor barrier should not emit harmful and toxic substances into the atmosphere, so as not to harm human health
Be as frost-resistant and flexible as possible, especially at low temperatures
Do not shrink, as this may lead to deformation of the protected insulation layer.

A very important indicator for high-quality and reliable vapor barrier is a low level of thermal conductivity. After all, the thickness of the laid layer of vapor barrier material is directly dependent on this indicator, that is, the lower the thermal conductivity value, the thinner the insulation layer will be. In any case, the premises will be reliably protected from air masses with an admixture of vapors only when all the work related to the selection and installation of vapor barrier is carried out efficiently and professionally.

2 Glassine - a popular type of vapor barrier

To date, manufacturers are ready to offer huge selection various materials installed as a vapor barrier. For example, parchment. And if any craftsman knows perfectly well what glassine is and what its advantage is compared to other competitors, then for ordinary people it's not so obvious here. Glassine vapor barrier is made on the basis of thick cardboard, which is pre-impregnated with the necessary bituminous solutions. Bitumen additionally gives glassine increased strength and moisture resistance.

Glassine is a thick cardboard, pre-impregnated with bituminous solutions.

The production of goods is carried out from a special high-density cardboard, which successfully resists moisture. This cardboard, which is also called roofing, belongs to the category of multilayer. So, it consists of more than 40 layers of various mixtures, including flax, wood, rag masses, cotton and even straw. In addition, impregnated nonwovens, whose task is to enhance the effectiveness of bituminous additives.

Glassine manufacturing technology involves several stages. After impregnation with bitumen and other additives, the mass is sent under the press. Special equipment issues required pressure so that the finished product meets all the requirements of strength and durability. Due to this, glassine can easily cope with heavy loads without showing any signs of deformation or curvature, which also has a positive effect on the integrity of the insulation.

Regardless of the manufacturer of this vapor barrier, glassine is produced in several main varieties - P250, P300, P350 and P400. As you might guess, the number in the marking indicates the density of the cardboard on the basis of which glassine is made. Naturally, the material great value density costs a little more, but the quality of the products fully justifies the investment.

Now consider what positive qualities glassine can boast of:

1. Light weight, due to which it is very easy and convenient to work with the material.
2. Glassine is malleable to any cutting tools, even ordinary knives.
3. Remarkable level of moisture resistance.
4. High elasticity - cardboard can be bent at any angle without visible changes in the shape and structure of the material.
5. Durability, strength, long life beneficial use.
6. The highest level of protection against water vapor in the air.

It should also be noted that glassine belongs to the category of products with high heat resistance. At high temperatures, for example, during the summer heat, the product does not lose its key features and properties, and also does not soften and does not collapse. The material has similar properties due to the addition of bituminous additives.

Some negative points in the operation of glassine are also available, which is quite natural. You can note such shortcomings as:

Not the highest level of fire safety, as well as fire resistance. The reason for this is the use paper base, as well as bitumen as an additive.
High temperatures do not affect the strength of the material, however, they lead to the release of some harmful volatile substances. For this reason, it is not recommended to buy a vapor barrier for use in areas where temperatures are very high.
Low temperatures, less than -40 degrees, have a very negative effect on the elasticity of the product, which begins to break.
If glassine is laid to protect the roof from water vapor, then an important point should be taken into account - prolonged intense ultraviolet radiation causes destruction in the structure of the material.
The service life reaches only a few years, so after the end of the useful life of glassine, it is recommended to renew it.

Although glassine is considered moisture resistant material and is able to tolerate liquid, even direct contact with it, but prolonged exposure can cause decay and destruction of the paper and wood components on which cardboard is made. For this reason, it is necessary to lay the vapor barrier only on a thoroughly dried surface. In addition, the room requires a properly functioning ventilation system.

3 Demanded and popular material - the scope of use of glassine

Glassine as a vapor barrier is primarily used to protect the floor, ceiling, roof of buildings and houses from condensation. Typically, the material plays the role of a substrate when waterproofing a floor or roof. Due to the numerous positive qualities, the owners of private houses, as well as professional craftsmen, are trying to purchase glassine as a roofing material.

Most often, glassine is used to protect the roof of buildings and houses from condensation.

As a rule, the first layer is a heater, after which a vapor barrier layer is installed, covered with a metal profile, metal tile, slate or other finishing material for finishing the roof. in isolation pitched structures parchment fits just fine. Due to such qualities as elasticity, lightness, ease of use, the vapor barrier quickly and without unnecessary problems It is installed on steep roofs, as well as on structures of complex and unusual shape.

In addition, glassine perfectly protects wooden elements from the appearance of condensate, especially in those places where the tree is in contact with structures made of concrete or earth. The wood does not swell or get wet, which leads to an increase in its service life. The construction of baths and saunas also actively uses a vapor barrier. In this case, glassine is installed in several layers around the entire perimeter of the structure.

Naturally, roofing is far from the only scope of the described vapor barrier. Glassine has proven itself as an insulation for:

Foundations apartment buildings, as well as their plinths and walls
Protecting basements of residential buildings and car garages from the damaging effects of moisture
Ventilated and hinged facades

For the floor, it is difficult to come up with a material that fits better than glassine. However, there are some features - glassine must be alternated with hot bitumen. And this is despite the presence of bitumen directly in the vapor barrier. There is nothing complicated, just lay out alternately a layer of hot bitumen, then an insulator, then bitumen again, then glassine, the last layer is bitumen. Such a kind of "pie" provides maximum level strength and reliability of a vapor barrier material that can perform its functions for a very long time.

Glassine is a new roofing material produced in the form of a roll. It serves as an improved continuation of roofing felts, as it is cardboard impregnated with bitumen. Its main purpose is to retain moisture and steam from getting into thermal insulation materials.

What is parchment for?

Areas of use:

Construction of baths for year-round use. Glassine will prevent moisture from entering the room, as well as protect it from low temperatures, the main thing is to correctly alternate materials. So the basis is a log house, on which glassine is placed, and only then mineral wool or other insulating material. This is followed by the turn of a thermal protective layer made of a special film and the installation of lining.
Roofing of buildings or structures from timber. Glassine in this case is used as the bottom layer to prevent the penetration of moisture from the inside of the building. Very often it is used due to its affordable cost and the quality of the tasks performed.
Protecting roofing insulation from moisture. This material is laid on both sides of the insulation (for example, expanded polystyrene), which will improve its performance and durability.
As a vapor barrier for floors and walls. Thus, it is possible to protect wooden surface, structures made of reinforced concrete and chipboard. To do this, you need to place glassine between the surfaces and connect them with special adhesive tape or mastic.
As a packaging material for the transportation of various goods.

Using glassine as waterproofing:

Waterproofing technology with glassine

How to protect the foundation

If the glassine has hardened and can be damaged when unwinding the roll, it is heated in the sun or near a fire. Then strips are cut. right size with sharpened staples or a knife. Glassine is not recommended to be laid directly on the base itself. To start, brick or concrete surface covered with hot bitumen, and then glassine. This sequence is repeated one more time.

Construction work should be carried out at an ambient temperature of at least +5 degrees, otherwise the bitumen will quickly harden, and the glassine will burst.

A pre-prepared surface is covered with well-heated bitumen, and while it has not yet hardened, it is lined with glassine on top. The joints of the material are overlapped, at least 10 cm. If the waterproofing requires several layers, then the joints should be at least 50 cm apart so as not to form bumps. The final stage of waterproofing is a layer of hot bitumen.

For waterproofing a vertical surface, the same multi-layer technique (usually two layers) is required. Only in this case, glassine is laid out inside brick walls.

Application for floor interior wall

When the old flooring is removed and the surface is prepared, you can apply hot bitumen - glassine - bitumen - glassine - bitumen. This number of layers is recommended for use in any waterproofing work.

For a room with high humidity a high-quality waterproofing layer is required flooring and a wall at a height of at least 10 cm. But under its arrangement, it is necessary to smooth the angle between the floor and the wall with a chain-link mesh fixed with staples or bitumen. Put a layer on it cement plaster, after that, sheets of glassine can be fixed and fixed with a layer of reinforced plaster.

Laying glassine on the floor and wall

Glassine vapor barrier

As a vapor barrier material, glassine is actively used both in private houses and in construction in general. To protect the insulation negative impact steam and moisture, glassine is mounted on both sides in the lower part of the roof or floor.

Sheets of material are laid out with an overlap of 10-15 cm, fastened together with construction glue or aluminum tape.

For work you will need:

Construction stapler;
Hammer;
Tape knife;
Screwdriver.

During the installation process, it is necessary to carefully handle glassine, accidental nail punctures and other damage can cause frost to form on the surface of the insulation.

What will it lead to correct vapor barrier under floor:

What can replace parchment

If in the process of repair and construction work the use of roofing materials is required, and for any reason glassine, as the most effective and affordable material, will not be, it is important to find an alternative to it. The most similar in composition and characteristics of roofing material and its varieties (rubemast, stekloizol, euroroofing material).

As a basis for rubemast, construction cardboard impregnated with bitumen and fixed with a film or powder is used. Its installation is carried out on a special mastic.

In stekloizol, the bituminous layer is applied to the stekloizol base, which gives it better characteristics.

Euroruberoid is considered a material that is more resistant to temperature changes, which can also be used as an alternative to glassine.

Yet as a vapor barrier material, glassine is the most effective and affordable option. It is not only able to protect the insulation from the negative effects of moisture and steam, bringing them out, but in this way prolongs the life of the roof and, accordingly, the entire structure.

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Glassine is a modern vapor barrier produced in rolls. It is used to protect the structural elements of buildings from the appearance of condensate on their surface.

Why vapor barrier is needed - basic requirements

Vapor barrier coatings eliminate the possibility of condensation on materials that are used to insulate various parts of building structures - in particular, roofs and floor bases. If you do not protect the insulation, it will very quickly become saturated with moisture. This will lead to the loss of their operational properties and to its subsequent destruction.

Ingress of condensate thermal insulation material causes an increase in the thermal conductivity of the latter. Because of this, significant heat losses and the formation of vapors (a mixture of small water droplets with warm air) will be observed in the premises of the building. Such suspensions will constantly look for a way out. They will find it in ceiling and floor surfaces. Over time, water vapor will destroy the surfaces of the ceiling and floor. A vapor barrier is installed precisely in order to prevent such a situation.

Installation of vapor barrier on the ceiling

Thanks to the materials that play the role of protecting the structural elements of buildings from condensate, floor and ceiling surfaces operate much longer.

A number of special requirements are put forward for modern vapor barrier products. The vapor barrier must:

Meet the fire safety rules, having a given reliability and fire resistance.
Effectively prevent the accumulation of condensate in building structures, have a small amount of water absorption and high moisture resistance.
Do not emit compounds negative for humans into the atmosphere - be clean from an environmental point of view.
Do not shrink, which leads to the formation of cold bridges.
Be flexible and as frost-resistant as possible.

An "ideal" vapor barrier should be characterized by a low thermal conductivity. The lower this figure, the more thin layer it will be possible to lay a protective material. Moisture properties of any modern building or a residential building can be called optimal only if the vapor barrier coating for their structural parts is selected and installed competently and professionally.

Glassine - how good is the vapor barrier?

The material considered in this article is a modern product made on the basis of thick cardboard, which is processed special formulations(bituminous). After their application, glassine acquires increased strength and a number of unique characteristics. This gives him the ability to withstand quite serious loads of a mechanical plan.

Note that in the manufacture of the described vapor barrier, a special cardboard is used. It has a density of 250 to 350 g/sq.m. Such cardboard is called roofing. It consists of many (up to 40) layers of straw, cotton, various rag masses, wood, flax. Additionally, non-woven materials in the form of highly crushed particles are added to its composition. This is done so that bituminous compounds can easily penetrate into the base of the material.

After processing with special solutions, glassine is pressed. It is carried out on special equipment that produces pressure up to 300 grams per square of the processed material. This pressing gives finished products the highest strength, minimizes the risk of violating the integrity of the vapor barrier, allows it to withstand significant loads.

Vapor barrier "Pergamin"

To date, glassine is produced in four varieties - P-400, P-350, P-300 and P-250. The numbers in the material marking indicate the density of the cardboard used in the production of the vapor barrier. This indicator is of great importance. The higher the density, the better performance characteristics final parchment.

The key advantages of the rolled vapor barrier material under consideration are as follows:

Light weight, easy handling by all cutting devices used today, ease of use.
Excellent moisture resistance.
Increased elasticity. Glassine easily bends without the slightest damage at almost any angle.
High-quality ventilation of water vapor.
High strength, durability, frost resistance, resistance to stress cracking natural factors and low temperatures.

In addition, glassine is a very heat-resistant material. Even at high ambient temperatures, it does not soften and does not lose its special properties. This is due to the fact that the described vapor barrier for the floor and ceiling is impregnated with bitumen.

About the disadvantages of glassine - how without them?

When laying the vapor barrier of interest to us on wet substrates, the effectiveness of the coating is significantly reduced. This should be taken into account when performing work with it. Also, glassine has other disadvantages, it:

It is characterized by limited resistance to fire, which is due to the bituminous impregnation of the material and its paper base.
It has insufficient resistance to temperature extremes, since it does not have a protective outer layer.
Able to release harmful compounds when the air temperature rises outside. Therefore, it is undesirable to use it in areas located in a hot climatic zone.
Breaks at excessively low temperatures (-40°).
Destroyed under the influence ultraviolet radiation. In this regard, glassine is never used without its subsequent coating with additional material to protect the roof.
Has a limited operating life. The vapor barrier from it must be replaced regularly.

Vapor barrier installation

One more important note. Moisture that collects on glassine flooring and roofing becomes the cause of rotting over time. structural elements from wood, which is transferred to other parts of the structure. Therefore, when installing this vapor barrier, it is necessary to take care of the organization of a high-quality and stable functioning ventilation system.

Areas of application of the material - a very popular insulator

The rolled vapor barrier under consideration was originally created exclusively as a material for protecting roofs of houses and buildings from condensation. Glassine served as a substrate during the waterproofing of the roof. And now it is mainly used as a roofing material.

It is usually mounted on top of a heat insulator, after which it is covered with slate or metal tiles, metal profiles and other products. Glassine is ideal for pitched roof structures. It is light and elastic, which allows it to be mounted on steep roofs and roofs with complex configurations. Also, with the help of glassine, various wooden structures in those areas where they come into contact with concrete or earth. The vapor barrier material perfectly protects the wood from swelling and excessive moisture, significantly increasing the service life of wood structures.

Glassine is actively used in the construction of saunas and baths, standing apart from other buildings and buildings. In such situations, the described vapor barrier is mounted around the perimeter of these buildings in several layers. Thus, saunas and baths are guaranteed a truly effective vapor protection.

Other areas of application of the material:

vapor barrier of hinged and ventilated facades;
protection of car garages and basements of residential buildings from moisture;
vapor protection of walls and socles of apartment buildings, as well as their foundations.

The use of "Pergamin" to protect against moisture

IN Lately glassine is increasingly being used as an excellent vapor barrier for floors. In this case, it is laid on the floor base along with hot bitumen. The recommended scheme for making a pie with steam protection of the floor looks like this:

bitumen (hot);
a layer of parchment;
bitumen again;
glassine;
and once again hot bitumen.

Note! Glassine for the floor is used only after waterproofing floor base. Moreover, a layer of material for waterproofing without fail starts 10-15 cm on the wall.

In addition, the angles between the wall and floor surfaces are pre-smoothed using a chain-link mesh for this purpose. It is attached with bitumen or building staples, and then treated with cement-based plaster. After this coating has dried, you can proceed with the installation of glassine on the floor. From above, the vapor barrier layer should be covered with reinforced plaster.

The standard scheme for laying glassine looks like this:

Thoroughly clean the subfloor or roof.
Roll out vapor barrier material along the surface.
Cut the rolled product to the required dimensions and attach it with a stapler (if the base is wooden), adhesive tape or bituminous mastic (if you work with concrete surfaces).
All the following rows of material are mounted with a 15 cm overlap.

To get a really high-quality vapor barrier, the gaps between the individual rows of glassine should be smeared with mastic.

Glassine is a modern vapor barrier produced in rolls. It is used to protect the structural elements of buildings from the appearance of condensate on their surface.

The ingress of condensate into the thickness of the heat-insulating material causes an increase in the thermal conductivity of the latter. Because of this, significant heat losses and the formation of vapors (a mixture of small water droplets with warm air) will be observed in the premises of the building. Such suspensions will constantly look for a way out. They will find it in ceiling and floor surfaces. Over time, water vapor will destroy the surfaces of the ceiling and floor. A vapor barrier is installed precisely in order to prevent such a situation.

Installation of vapor barrier on the ceiling

Thanks to the materials that play the role of protecting the structural elements of buildings from condensate, floor and ceiling surfaces are used much longer.

A number of special requirements are put forward for modern vapor barrier products. The vapor barrier must:

Meet the fire safety rules, having a given reliability and fire resistance.
Effectively prevent the accumulation of condensate in building structures, have a small amount of water absorption and high moisture resistance.
Do not emit compounds negative for humans into the atmosphere - be clean from an environmental point of view.
Do not shrink, which leads to the formation of cold bridges.
Be flexible and as frost-resistant as possible.

An "ideal" vapor barrier should be characterized by a low thermal conductivity. The lower this indicator, the thinner the layer of protective material can be laid. The moisture-technical properties of any modern structure or residential building can only be called optimal if the vapor barrier coating for their structural parts is selected and installed competently and professionally.

The material considered in this article is a modern product made on the basis of thick cardboard, which is processed with special compounds (bituminous). After their application, glassine acquires increased strength and a number of unique characteristics. This gives him the ability to withstand quite serious loads of a mechanical plan.

After processing with special solutions, glassine is pressed. It is carried out on special equipment that produces pressure up to 300 grams per square of the processed material. Such pressing gives the finished product the highest strength, minimizes the risk of violating the integrity of the vapor barrier, and allows it to withstand significant loads.

Vapor barrier "Pergamin"

The key advantages of the rolled vapor barrier material under consideration are as follows:

Light weight, ease of processing with all cutting devices used today, ease of use.
Excellent moisture resistance.
Increased elasticity. Glassine easily bends without the slightest damage at almost any angle.
High-quality ventilation of water vapor.
High strength, durability, frost resistance, resistance to cracking under the influence of natural factors and low temperatures.

It is characterized by limited resistance to fire, which is due to the bituminous impregnation of the material and its paper base.
It has insufficient resistance to temperature extremes, since it does not have a protective outer layer.
Able to release harmful compounds when the air temperature rises outside. Therefore, it is undesirable to use it in areas located in a hot climatic zone.
Breaks at excessively low temperatures (-40°).
Destroyed by ultraviolet radiation. In this regard, glassine is never used without its subsequent coating with additional material to protect the roof.
Has a limited operating life. The vapor barrier from it must be replaced regularly.

Vapor barrier installation

One more important note. The moisture that collects on the glassine for the floor and roof over time becomes the cause of the development of rotting of the structural elements of wood, which is transmitted to other parts of the structure. Therefore, when installing this vapor barrier, it is necessary to take care of the organization of a high-quality and stable functioning ventilation system.

The rolled vapor barrier under consideration was originally created exclusively as a material for protecting roofs of houses and buildings from condensation. Glassine served as a substrate during the conduction. And now it is mainly used as a roofing material.

It is usually mounted on top of a heat insulator, after which it is covered with metal profiles and other products. Glassine is ideal for pitched roof structures. It is light and elastic, which allows it to be mounted on steep roofs and roofs with complex configurations. Also, with the help of glassine, various wooden structures are reliably protected from condensation in those areas where they come into contact with concrete or earth. The vapor barrier material perfectly protects the wood from swelling and excessive moisture, significantly increasing the service life of wood structures.

Other areas of application of the material:

vapor barrier of hinged and ventilated facades;
protection of car garages and basements of residential buildings from moisture;
vapor protection of walls and socles of apartment buildings, as well as their foundations.

The use of "Pergamin" to protect against moisture

Recently, glassine has been increasingly used as an excellent vapor barrier for the floor. In this case, it is laid on the floor base along with hot bitumen. The recommended scheme for making a pie with steam protection of the floor looks like this:

bitumen (hot);
a layer of parchment;
bitumen again;
glassine;
and once again hot bitumen.

Note! Glassine for the floor is used only after the waterproofing of the floor base. Moreover, a layer of material for waterproofing without fail starts 10-15 cm on the wall.

The standard scheme for laying glassine looks like this:

Thoroughly clean the subfloor or roof.
Roll out the vapor barrier material on the surface.
Cut the rolled product to the required dimensions and attach it with a stapler (if the base is wooden), adhesive tape or bituminous mastic (if you work with concrete surfaces).
All the following rows of material are mounted with a 15 cm overlap.

To get a really high-quality vapor barrier, the gaps between the individual rows of glassine should be smeared with mastic.

Let's talk about such material as glassine. We will try to describe as fully and in detail what kind of material it is, how it can be used, and how to profitably buy glassine of the exact brand that you need.

Glassine is roofing paper impregnated with petroleum bitumen, replacing roofing paper in the field of insulating materials.

The latter was abandoned because the tar used in its production has a high degree of carcinogenicity.

The difference between glassine according to GOST and according to TU

Most frequently asked question about glassine - "What is the difference between GOST and TU"? We already briefly touched on this topic in the article about certificates, but decided to remind you again. The main difference is in the density of the cardboard used in the production of glassine.

For clarity, we have prepared a table.

Glassine brand	Cardboard density	Roll size	Roll weight


	Not produced
	180-200 gr/m2
	150-170 gr/m2

The table shows data on the glassine produced by the Ryazansky KRZ, which was present in our assortment, and on our native Antsnabovsky glassine.

Separately, I would like to note that glassine P-250 according to GOST is not produced! And glassine P-300 according to GOST, the Ryazan plant has not been making for several years.

So, having figured out what glassine is, and how GOST differs from TU, we move on. Let's see what this traditional material is needed for in our age of high technology.

Areas of application of glassine

lining for the lower layers of the roofing carpet;
construction of winter baths;
protection of insulation indoors, and sometimes with outer side from moisture and condensate (dew), to extend the life of the heat-insulating material;
isolation from vapors and condensate between wood-shaving material and reinforced concrete bases;
packaging material for metal products.

The main scope and task of glassine is, after all, vapor barrier and protection against condensate. For those who have not come across similar terms before, we turn to Wikipedia:

Vapor barrier is a combination of various methods of protection heat-insulating materials And building structures from the penetration of steam and, as a result, from the loss and absorption of condensate (dew). Unlike waterproofing, vapor barriers prevent the penetration of vapor, not liquid.

It turns out that, for example, during the construction of the same bath or country house, glassine is vital - it prolongs the life of the insulation, provides temperature and humidity conditions in the room.

It is important to remember that glassine is not a roofing material, as many (if not all) mistakenly believe. It is just an auxiliary material for roofing.

Which glassine to buy

The need for vapor barrier is already clear, now you need to decide which glassine to buy for you.

It all depends on the tasks and goals. Of course, GOST is denser, thicker and seems more solid. However, in our experience, correct device vapor barrier service life and density do not differ as much as the price varies.

The undoubted advantage of glassine from Ant-Snab is its price. Most cheap easy glassine can be bought from us at a price of less than 200 rubles per roll. And that's the retail price! We provide additional discounts for wholesalers and regional partners.

How not to be deceived when buying glassine

If you still decide to buy glassine elsewhere, remember key points, in which they can deceive when selling:

glassine P-250 GOST does not exist in nature;

glassine P-350 TU cannot cost 50 rubles per roll, GOST - even more so;

options for winding rolls - a lot, always check if they sold you 9 meters for the price of 15;

no one has certificates for glassine TU - this is pointless;

the weight of glassine rolls is always indicated for reference, but the error is small. If you bought a roll of "glassine P-350 GOST (20 meters)", it cannot weigh 5 kg.

To avoid all these unpleasant moments, doubts and checks - feel free to call our office and feel free to order our honest 15-meter rolls.

Over the past decades, the construction industry has been replenished with new insulating materials. Roofing felt was replaced by a modern analogue - glassine. It is obtained from dense roofing cardboard, which is impregnated with special fusible grades. bituminous compositions. After impregnation, the material acquires plasticity and increased water-repellent properties. Glassine is sold in rolls, which makes it convenient to transport, store and stack.

Scope of material use

The surface of roofing glassine is uncovered, it is not treated with refractory bitumen and does not have a special layer of powder. Therefore, it is not used for outdoor roofing. The main area of application according to GOST is the device of the lining layer of the roofing system, vapor barrier mineral wool insulation in a roofing pie. Glassine serves as an enclosing barrier for the penetration of vapors rising from the underlying premises into the under-roof space into the thickness of the insulation and the formation of condensate moisture, ensuring the full functioning of the mineral wool as a heater. However, it is mainly used in the construction of pitched roofs, on flat roofs preference for ruberoid.

In addition to the main purpose, glassine is used as:

Additional roof waterproofing.
Protection of reinforced concrete bases in places of their contact with the ground and the foundation with wall structures to prevent the penetration of moisture from groundwater.
Waterproofing structures made of wood and particle boards. Install a glassine gasket between the door, window blocks and wall structure.
Waterproofing floors, for which glassine is laid with a continuous carpet with a 15-centimeter overlap of each subsequent canvas on the previous one. They also provide for the inlet of rolled material onto vertical structures and processing of butt joints using liquid bitumen.
Protecting the insulation from excessive moisture when laying heating mains. The covering material is wound with an overlap on the insulated glass wool pipe, moving in a spiral.
Packaging of metal products to protect products from condensation and moisture during storage and transportation.

Glassine has found application in the construction of baths, used for sheathing wooden beams, arrangement of ventilated facades. The material is laid in the basements, leaving a board with a height of 0.3 - 0.5 m. It copes with the task of waterproofing and does not let it into the room ground water. Nevertheless, glassine, as a vapor barrier, is its main area of application.

Characteristics and properties of the material

Glassine has important characteristics, which are presented by consumers to insulating material. The main ones are:

high level of moisture resistance;
strength and durability: the material retains its integrity during long term operation (specific indicators depend on the brand of glassine);
plasticity and flexibility, which positively affects the convenience of working with the material;
frost resistance: glassine does not crack in cold frosty winters, its strength parameters do not deteriorate;
high vapor barrier properties, allowing to protect structures from various materials from condensate;
maintainability: in the presence of damaged areas of glassine insulation, these fragments are cut out, replacing with new pieces of fabric overlapping or applying the bottom layer in the roofing system without removing the old vapor barrier.
light weight and low material cost.

Apart from positive characteristics The material also has significant disadvantages, these include:

lack of a protective layer, which makes the material vulnerable to open areas(therefore, glassine is mainly used for internal works);
opportunity to work with roll material at an air temperature value of at least +5 degrees, since at lower rates it loses its original flexibility;
sensitivity to ultraviolet radiation;
flammability (belongs to group G4).

Varieties of glassine

Several material options are available. The grades differ in the applied cardboard base, which differs in the parameters of thickness, density, and type of bitumen, on which they depend specifications parchment.

The thickness of the cardboard varies from 20 to 40 layers of fibers of various materials. It can be linen, cotton, wood fibers, cellulose, and other component components. To ensure a good level of absorbency of bituminous impregnations, non-woven types of materials are included in the structure of the cardboard. And improvements in technical indicators are achieved by pressing cardboard under a pressure of 300 g / m2.

Grade P250 glassine is considered the thinnest type of material. However, it is characterized by sufficient strength and elasticity. The indicator of breaking force during tension is announced by manufacturers at a level of at least 15 kgf, and the ability to protect without the appearance of signs of water on the surface of the material is characterized by 10 hours. The price of this material is low.

Glassine, marked P300, is thicker and more efficient than the previous one. It is durable and has a good level of flexibility, which is important when laying it. When stretched, it can easily cope with a force of 21 kgf. Able to retain moisture on the surface, not letting it in for 20 hours. Daily moisture absorption does not exceed 20 percent.

by the most high rate the breaking capacity of the canvas (27 kgf) has glassine - roofing material P350. When compared with other brands, it stands out for its increased density, high strength characteristics and the ability to retain moisture for 22 hours.

By purchasing glassine, the consumer receives a high-quality vapor barrier material at a low price and saves money. However, it should be remembered that it is not suitable as independent element but is only used in conjunction with other roofing materials and heaters.

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