Volumetric diffusion membrane technonikol. What is a diffusion membrane. The use of membranes in the installation of floor coverings

Instructions for application of the TechnoNICOL superdiffusion membrane Optima.

During the construction of insulated pitched roofs membrane TechnoNIKOL superdiffusion Optima, price available on our website, mounted in dry weather at the end of the installation of the truss system and heat insulator. Make sure that the distance between the rafters is no more than 1.2 m. The membrane-film is rolled out on top of the rafters as tightly as possible to the heat insulator with the bright side and fastened with nails or a stapler.

Application of TechnoNICOL superdiffusion membrane Optima carried out by horizontal strips overlapping from the eaves to the ridge of the roof with an overlap of strips horizontally of at least 15 cm, vertically - at least 20 cm. The vertical joints of the ends of the membrane are located on the rafters. Each joint is fixed with a mounting tape made of acrylic or butyl rubber. On the ridge, the strips of building material overlap without a ventilation gap. Do you want the steam to be removed in winter? Then mount the film tightly to the heat insulator.

When the thickness of the rafters is greater than the thickness of the heat insulator, the film is pressed against the side of the rafters with slats 2cm * 3cm or staples of the construction stapler. The bottom edge of the film will drain water into the gutter. At the end of the film fastening, it is fixed with 3 cm * 5 cm counters. The counter rails are nailed on top along the rafters. Then comes the crate.

At application of the TechnoNICOL superdiffusion membrane Optima it is necessary to avoid the runoff of water from the film onto the heat insulator through cracks and joints. It is necessary to isolate well the crossing areas with penetrating parts: stove / fireplace pipes, ventilation ducts, antenna stands. At the point of intersection, the film is notched in a trapezoidal shape. The top and bottom flaps open and are attached to the penetrating part or to the nearest horizontal element of the crate with a sealing tape. The side flaps open and are also attached to the penetrating element. In valleys and on inclined ridges of hip and tent roofs, TechnoNICOL film is first mounted along the axis of the ridge or valley. And the horizontal strips of the product on the slopes of the roof are placed on top, overlapping.

Natural ventilation of the under-roofing space is performed by a ventilation gap between the roofing and the film. The thickness of the ventilation gap depends on the thickness of the counterbar and the crate and is equal to 8cm-10cm. In the filing of the eaves, ventilation holes are made, and where the ridge is, ventilation devices.

When installing high-rise ventilation facades application of TechnoNICOL superdiffusion membrane Optima occurs from the outside of the heat insulator. The film is laid on the facade along with the installation of thermal insulation. stripes additional element located so that there is a natural drain and the elimination of external moisture and condensate.

For external facade insulation of low-rise buildings with siding or clapboard membrane TechnoNIKOL superdiffusion Optima at the expense characteristics mounted tightly to the outer part of the heat insulator under the decorative trim with the multi-colored side out. Building materials are fixed to the elements of the supporting frame with strips with an overlap of 10cm-15cm. On the top of the frame there are 3 cm * 5 cm counters, creating a ventilation gap between the film and the inside of the siding. The bottom edge of the film should be located on the drainage drain of the plinth.

The most important thing for any building is that the roof does not leak. This is especially true for those areas in which precipitation can fall almost constantly. It is rain and melt water that can get under the coating and destroy the insulation and the roof itself. A membrane must be used to prevent this effect. Check out .

The membrane is a relatively new material. Previously, only films were used, in contrast to which, membranes, having a non-woven structure, are able to release steam from the room, preventing moisture from entering the roof.

The main properties of membranes are:

• Strength;
• Layering;
• Providing waterproofing;
• Vapor permeability.

Separately, we can distinguish a volumetric diffusion membrane, which is intended for work with seam and metal coatings, such as:

• Zinc;
• Copper;
• steel;
• Aluminum.

This type of material is a polypropylene non-woven membrane having a three-dimensional structural lattice.

The benefits include:

1. Use with metal coatings;
2. Ensuring constant ventilation;
3. Removal of condensate;
4. Can be used for complex roofs.

Types and characteristics of diffusion membranes

Membranes have some differences:

• Production technology;
• Used non-woven materials;
• Inclusion of special additives to ensure stability (UV);
• Number of layers;
• Type of waterproof film;
• The way they are fastened.

In addition, membranes differ in the way they are laid:

1. One-sided - laying occurs across the rafters only on a certain side;
2. Double-sided - can be laid on top of the insulation on either side.

The hydro and windproof Tyvek Solid membrane has a non-woven polyethylene material (single layer). In addition, it has increased vapor permeability, which is maintained throughout the entire service life.

Also, this type of membrane is resistant to stretching and tearing, while remaining quite light.

The scope of Tyvek Solid membranes is quite wide and can be installed on:

1. Roofs with roof ventilation;
2. Thermal insulation protection of rafters (along their entire height);
3. Metal roofs (even with seam coverings);
4. Mounted ventilation facades with the possibility of using for facing any materials;
5. Load-bearing structures made of wood.

Underroofing diffusion membrane Jtd 115 TechnoNIKOL has 3 layers and consists of 100% polyethylene.
This type of roofing membrane is intended to protect under-roof structures from moisture, condensation and too cold air.

It can be used in ventilated rooms and pitched roofs that do not have insulation, where the following can be used as roofing material:

• Slate;
• metal tile;
• Ondulin;
• Ceramic tiles;
• Polymer tiles.

The Isopsan three-layer membrane is vapour-permeable, waterproof and windproof.

This type of membrane is used to protect insulation, walls and roofing elements from:

• wind;
• condensate;
• moisture.

This material is laid directly on the insulation. Since there is no ventilation gap with this installation, this will make it possible to eliminate the cost of installing the crate.

In addition, the Isopsan diffusion membrane combines increased water resistance and vapor permeability, which will not only allow installation work in any weather, but also significantly increase the operating period of the insulation.

Diffusion membrane mounting technology

Volumetric diffusion membranes must be laid as follows:

1. On top of the flooring, always parallel to the eaves;
2. The material is fastened along the top edge using a stapler or roofing nails;
3. The place of fastenings should be covered by each subsequent roll by an average of 7 cm;
4. Then, the rolls must be glued at the intersections with a special glue;
5. To ensure waterproofing, in the places where the counter-lattice is attached, a sealing tape must be placed on top of the film.

It is important to lay the membrane around the chimneys 5-10 centimeters above the roof itself. The material is sealed with adhesive tape. Corner cuts are glued in the same way.

Cost of diffusion membrane for roofing

It is important to know that both vapor barrier and waterproofing cost, on average, only 1-5% of the total cost of the entire roof.

Do not forget that a poor-quality choice of material, as well as improperly carried out work, will certainly affect the condition of the roof and the room as a whole in the future.

Diffusion membrane is a roll material for waterproofing. It is used for outdoor work and is an important link in the insulation of the house. The material is characterized by one-sided conductivity of moisture and is able to remove steam from the insulation, which is formed due to temperature changes and a significant increase in humidity.

It is usually three-layer, the top and bottom layers are non-woven polypropylene sheets. In membranes, the middle layer is resistant to stretching. Together with a strong two-layer frame, the membrane is characterized by high resistance to mechanical damage, hydrophobicity and vapor permeability. The layers in the diffusion membranes are connected using ultrasound - this eliminates the possibility of damage to the middle and allows you to achieve excellent parameters. Such membranes are environmentally friendly and are not subject to the harmful effects of bacteria.

Vapor permeability is an important parameter of a diffusion membrane. According to this characteristic, the material is divided into three categories:

1. Low diffusion membrane material, the vapor permeability of which is less than 300 mg of steam per 1 m 2 per day. Such a canvas is used in internal partitions.
2. Medium diffusion material conducts from 300 to 1000 mg / m 2 per day. This type of membrane is usually used; they have proven themselves well in zones of medium and temperate climates.
3. High diffusion membranes or superdiffusion have a vapor permeability of more than 1000 mg / m 2 / day. They are used in areas with large differences in humidity, harsh climates or with a large thickness of insulation.

Diffusion membranes protect the insulation, internal structural elements of the roof, walls and the whole house from heat loss. The water-repellent properties of the material create good protection against external influences, and the airtightness reduces heat loss in winter.

The membrane protects the insulation from the negative effects of moisture, which penetrates from the outside under the outer cladding. High vapor permeability quickly removes water from under the roofing cake.

The membrane conducts moisture only in one direction - from the insulation, then it drains or evaporates. The sides of the membrane are marked in different colors, with a logo or pattern on one of the sides. Erroneous installation of the material by the opposite side will certainly lead to wetting of the heat insulator and a violation of the insulation of the house.

The scope of membranes is quite wide: they can be used for waterproofing roofs that have under-roof ventilation, for thermal insulation protection of rafters along their entire height, in ventilated curtain walls and in load-bearing wooden structures. When using such a membrane, it is not necessary to perform additional wood impregnation.

Also, the diffusion membrane is used in ventilated rooms and pitched roofs that do not have insulation, where the roofing material is:

• polymer tiles;
• slate;
• ceramic tiles;
• ondulin;
• metal tile.

• reliability and high strength of the material;
• resistance to temperature changes. Even a strong overheating of the membrane does not lead to the formation of harmful substances;
• chemical resistance to acids and alkalis;
• health safety.

It is important to mount the membrane with the right side (in the case of Ondutis, the logo is out, and the clean side is towards the insulation). When installing diffusion membranes, it is important to prevent moisture from entering the thermal insulation through joints and leaks. It is also necessary to isolate the places where penetrating structural elements intersect: ventilation ducts, antennas, chimneys and chimneys. Where they intersect, a trapezoid-shaped incision is made in the membrane.

In order for the membrane to function effectively, it is necessary to provide for natural insulation of the space under the roof and ensure the removal of water vapor. The ventilated gap between the film and the coating is responsible for this function. Its thickness is equal to the thickness of the crate and counter rail (usually 7-12 cm). To provide access to fresh air and remove water vapor, holes are made for ventilation.

With external wall insulation, diffusion membranes are mounted close to the outer side of the thermal insulation. Materials are attached to the supporting frame using a construction stapler or galvanized nails. Counter rails are mounted on top to create a ventilation gap between the inner side of the facing material and the surface of the film.

In the installation of building structures, in addition to the basic properties and performance of the materials used, auxiliary elements play an important role. Among them, a special place is occupied by insulators that ensure the integrity of the main structure. The function of this component in roofing is essential. Thanks to the insulating layer, a barrier is formed against precipitation and other external influences. There are various means of providing such protection on the market, but the most effective material is waterproofing diffusion membranes, which are laid directly into the roof structure. But the scope of this coating is not limited. For example, the insulator is also used in laying floor and wall materials.

General information about diffuse insulators

Especially to preserve the technical and physical properties of the roofing, builders use waterproofing roofing films. Most of them are sold in the form of rolls, which outwardly practically do not differ from each other. Such insulators can be evaluated according to various criteria, including vapor permeability. Actually, this is the main quality of polymer films, which determines the ability of their structure to pass water vapor. In the language of specialists, this parameter is called the diffusion flux density. In practice, the vapor permeability determines the intensity of the passage of moisture through the roof into the rooms used. Thus, diffusion membranes minimize the possibility of penetration of sediments and their derivatives under the roof. Similar functions are performed by almost all specialized waterproofing materials, but the membranes also include the ability to withstand the intense effects of precipitation in gusty winds. Also, if ordinary insulating layers form only a basic protection against raindrops and snow, then the diffusion film becomes an effective barrier to water vapor.

The principle of operation of the membrane

A common problem with many waterproofing membranes is the accumulation of moisture in one place - usually in front of an impervious layer. Proper installation provides for special channels for draining fluid, but this method does not eliminate all operating problems. Diffusion membranes included in roofing "pies" work according to a different principle. It does not act passively, but actively, that is, they do not provide a stationary barrier, but due to a special layer it conducts moisture from the insulation to the place of future runoff or weathering. Therefore, it is very important to place the material in the working area on the right side.

The very structure of the functional web of such insulators resembles a capillary pump, which is formed by two layers. The fleecy fabric acts as a moisture collector and transfers it to the perforated areas. Further, through microscopic holes, drops with steam seep to the outer side of the web. In such a moisture removal scheme, there is a risk of liquid contact with metal elements of the roof structure. To prevent corrosion processes, a bulk diffusion membrane on a polypropylene non-woven base is used. Also, films with increased throughput will help to save moisture-sensitive materials - they provide moisture removal faster, reducing the chances of destructive processes.

Membrane varieties

Coatings of this type differ according to several criteria, but the degree of vapor permeability is considered the main one. In particular, low- and high-vapor permeable insulators are distinguished. The first category includes diffusion membranes, which consist of 2-3 layers with a reinforcing mesh. Such a material has an average ability to conduct water vapor, but as a universal means of protection against precipitation, it can be the best solution. Highly vapor permeable materials show a higher level of throughput, which is why they are also called superdiffusion films. Again, the high rate of conduction of moisture does not allow it to condense, which helps to protect the insulation layer from destruction. For this reason, builders simplify the insulating layers, eliminating ventilation gaps.

Also, in some cases, special types of vapor-permeable films are used, among which are the mentioned volumetric membranes. This material is usually used to provide insulation for seam and metal coatings. Volumetric separating diffusion membranes are mounted with the provision of an upper ventilation gap on roofs made of aluminum, steel, titanium and other metals.

Characteristics of diffuse membranes

The main performance indicator of such materials is vapor impermeability. But when choosing, other characteristics are also taken into account - for example, grammar, water resistance and temperature resistance. As for the grammage, it denotes the mass of the film, which increases in proportion to the thickness of the material. Also, as the weight increases, the mechanical strength of the insulation also increases. On the market you can find films whose grammage varies from 60 to 270 g/m 2 . Also important is the resistance of the coating to water pressure. This characteristic refers to the water resistance that a diffusion membrane has in a particular design. There are different methods for estimating this parameter, but the system that provides for marking according to classes W1-W3 is considered the simplest. Thus, the belonging of the membrane to category W1 indicates that the material can withstand the pressure of a water column, the height of which is 20 cm, for 2 hours.

In addition to precipitation and humidity, warm sunny weather can cause damage to waterproofing films. As standard, these materials withstand peak temperatures in the range of 80-100 °C. As for resistance to ultraviolet radiation, for example, the TechnoNIKOL diffusion membrane in the basic version can be exposed to direct sunlight for 3 months. For enhanced modifications, this time period increases to 4 months.

Application in roof construction

As part of the roof, the insulating membrane provides protection for the insulation and the internal parts of the structure. The layer performs several functions at the same time - in addition to protecting against moisture and steam, it also protects the roof elements from weathering. It is wrong to attribute the tasks of this material to the insulation of the premises of the building. The main functions of the membrane still extend to the protection of the insulating layer, which, in turn, regulates the humidity, and in some cases, temperature conditions. In the course of designing the scheme of the membrane device, it is necessary to prevent the possibility of water runoff from the film surface onto the heat insulator at the joints. As a rule, the underlay diffusion membrane is adjacent to ventilation ducts, chimneys and chimneys, antenna posts and other third-party components, the intersections with which must be isolated.

The use of membranes in the installation of floor coverings

Ensuring reliable insulation is also required in the premises themselves. So, floor surfaces retain their decorative and technical qualities only under conditions of optimal temperature and humidity conditions. Of course, there are materials that are not sensitive to the same effects of moisture, but wood surfaces are not one of them. Usually, the use of diffusion membranes in floor coverings is limited to the creation of an auxiliary substrate for insulation. However, the floor on which the work is performed may matter. The most demanding is the lower level in a private house, especially if it connects the living quarters with the basement.

Application in wall and facade cladding

The diffusion film also provides protection against weathering and moisture of the heat-insulating materials included in the composition. The membranes are placed on the outside, thus providing the possibility of passing excess moisture and steam through the ventilated gap in the cladding. Installation is carried out directly on the facade of the house along with heat-insulating panels. By the way, if a metal supporting frame is used in the design, then a volumetric diffusion membrane is optimal, which will create a natural moisture drain without the risk of corrosion. If you plan to use siding or lining in the decoration, then the film must be fixed close to the outer side of the insulation under the decorative cladding. This is one of the simplest ways to use diffuse insulators, as it requires minimal effort in terms of installation - just use a construction stapler or galvanized nails and fix the material to the supporting structure.

Mounting the diffusion membrane

With the external method of placing the material, it is desirable to perform the operation in dry weather and together with the fixation of the heat insulator. The membrane should be rolled out over the entire work surface and secured with nails or staples. The classic installation on the roof involves laying in horizontal strips with an overlap of about 15 cm. In this case, the vertical joints of the ends should be placed on the rafters. All points and lines of gaps between individual pieces of material are fixed with butyl rubber or acrylic tape. A ventilation gap is not required if the diffusion membranes are planned to be installed on the roof, but when laying the insulator on facade surfaces, it is better to provide it. In winter, the load on the insulating material increases significantly, so it is recommended to inspect the roof in the fall to check the tightness of the membrane to the insulator. If the thickness of the rafters exceeds that of the heat insulator, then the vapor-tight material should be pressed against their side with slats with a standard size of 2x3 cm. You can also use building brackets to perform this task. In the course of work, one should be guided by the fact that the lower edge of the membrane ensures the unhindered removal of moisture into a special drainage chute.

Manufacturers

Nonwovens are represented on the market by various manufacturers, among which there are many domestic ones. In particular, the diffusion membrane "TechnoNIKOL" allows you to arrange waterproofing, which at the same time protects structures from contact with moisture and allows surfaces to "breathe". The material of this line is presented in several versions, including those with reinforcing fibers. Also, the TechnoNIKOL superdiffusion film, which is made of a three-layer microporous material, won the trust of users. The difference between this insulator is the double-sided use of non-woven polypropylene, which performs a protective function for the main layer. It is expedient to use such a membrane in roof coverings, which require not only high-quality performance of insulating tasks, but also the preservation of the strength properties of the structure.

A fairly well-known manufacturer of vapor-tight waterproofing agents is the DuPont company, which specializes in protecting wall and roof systems through air and water filtration. Under this brand comes a diffusion film, which is a multifunctional hydro-windproof film. The material has a mesh structure formed by polymer fibers. Unlike competing insulators, Tyvek coatings are environmentally friendly. That is, they can be used both in exterior decoration and in the structure of internal facing coatings. In both cases, the inclusion of this brand of diffusion film will keep the finish dry and durable.

Conclusion

Traditional methods of installing insulating layers usually do not require special installation conditions. It is enough to pick up a sheet or plate of the appropriate size and fix the material in the working area. According to this principle, both insulating material and waterproofing are usually mounted. The diffusion membrane, in turn, guarantees a higher operating efficiency than conventional insulators. But to achieve it, it is important to follow the rules for the location and fastening of vapor-proof films relative to the insulating layers. Roof structures are the most difficult in this regard, as the moisture-removing material can come into contact with other roofing components and roof systems. Also, communications for drainage should initially be provided, with which the diffusion material will interact. From the point of view of installation, the installation of insulators on walls and facade structures looks somewhat simpler. In such cases, nevertheless, the task of maintaining the ventilation properties of the coating comes first, which are realized due to the inclusion of a vapor-tight membrane in the composition of the insulating layer.

When we build any room, one of the main tasks is to arrange the roof so that it does not leak. This problem is very acute in those places where the amount of precipitation exceeds the average.

Rainfall, water, which is formed during the melting of snow and ice, can leak under the roofing and destroy it and the insulation system. To prevent this from happening, a diffusion membrane is used. Now we will try to understand the intricacies of installing a membrane roof.

Relatively recently, when installing the roof, a diffusion membrane began to be used. Previously, various films were most often used, but their use did not solve all the problems of moisture insulation. The use of a special roofing membrane contributes to excellent ventilation of the roof, releasing steam, but not allowing it to reach the roof.

Distinctive properties of the membrane:

• strong structure;
• several layers;
• excellent vapor permeability;
• volumetric membrane, used for roofing with zinc, steel, copper and aluminum coating, as this type of roofing is prone to rust.

The layers in the diffusion membrane are most often made using a material such as non-woven propylene, with the middle layer being made to resist tension and the outer layers being characterized as being damage resistant.

In the production of diffusion membranes, the layers are interconnected using ultrasound, due to which the necessary consumer properties are achieved. The material from which roofing membranes are made does not emit harmful fumes and is not affected by fungi and bacteria.

Vapor protection is one of the important parameters characterizing a diffusion membrane. According to this parameter, they are divided into three types:

• The vapor permeability is from three hundred to four hundred milligrams per square meter. Such material is used to protect internal partitions.
• Steam permeability from four hundred to a thousand milligrams per square meter, used in regions with an average and temperate climate.
• Permeability above a thousand milligrams per square meter, most often used at high humidity, sudden temperature changes or thick insulation.

Membrane Properties

It serves as a protection for the insulation from moisture penetration. The inner and outer layers of the membrane are painted in different colors so as not to confuse them during installation work, as this can lead to improper functioning and ultimately death of the insulation.

Characteristics of hydroisol

This type of diffusion membrane consists of a three-dimensional structural lattice, which is based on a non-woven propylene base. Its advantages:

• application on metal coatings;
• constant two-way ventilation;
• efficient condensate discharge;
• use in the construction of a multi-level roof.

Diffusion membranes: types and indicators

In the production of this product, a non-woven material is used, with various additives that ensure its stable structure, consists of many layers, has various types of fastening, differs in the way of laying:

• Unilateral. Laying on one side perpendicular to the rafters, from one of the surfaces.
• Bilateral. Laying on either side.

Types of diffusion membranes

Consider the types of diffusion membranes:

• TyvekSolid is a waterproof and windproof diffusion membrane consisting of a single layer of non-woven polyethylene. It is distinguished by excellent protection against steam during the entire time of use. It is light and stretches well, it is also resistant to tearing. It is used for many types of roofs, it is used for their ventilation, for heat-insulating protection of rafters, for metal coatings, for protecting facades lined with various materials, for wooden structures, in this case they do not need additional chemical treatment.

• Jtd 115 TechnoNIKOL. This type of membrane has a three-layer structure and is based on polyethylene. It is mainly used to protect against damp air, cold and condensation, the base of the roof. Scope: ventilated premises, non-insulated pitched roofs, while roofing material, slate sheets, ceramic and polymer tiles.
• Isopsan - consists of three layers, has excellent protection against wind, moisture and steam. It is used in cases where it is necessary to protect the insulation material, walls and roof structures from undesirable environmental influences. It is mounted mainly directly on the insulation, which reduces the cost of its installation, since in this case there is no need for additional installation of the crate for a ventilated gap. The excellent moisture-proof properties of this material allow it to be used at any time of the year.

• Ondutis SA 115 and SA 130 is a new type diffuse membrane, its area of ​​application is areas with a humid or harsh climate, as it is distinguished by excellent vapor permeability of over a thousand milligrams per square meter per day. It is called super diffusion, it perfectly protects the insulation and the roof structure. Ondutis can also be used as a roof before the installation of roofing materials for up to sixty days.
• Dorken Delta-Vent N. This material does an excellent job of removing moisture from under the roof of the room. Thus, the overall structure remains dry. This volumetric diffusion membrane is strong enough, it forms a protection for the thermal insulation layer from the ingress of insects. Dorken Delta-Vent N has a number of advantages: a high level of strength of the bottom layer (fully protected from various damages), this material has a long service life, the outer layer is completely waterproof (this diffusion film not only prevents the penetration of moisture, but also withstands heavy rain ), a high level of vapor permeability, no glare from the sun, excellent wind protection is formed, there is resistance to ultraviolet rays. This is not all the advantages of this type of membrane. Scope - pitched roof with a single or double ventilation gap. Also, this type is used for ventilated facades, frame structures of walls.

• Fakro Eurotop. This type is divided into several types, in which the scope is different. They are used for roofs that have a standard angle of inclination. Volumetric film can be installed on top of the insulation. Fakro Eurotop removes steam from the thermal insulation layer. This film provides complete protection of the under-roof space from various loads of moisture and wind.

Distinctive features of types of diffusion membrane

All waterproofing diffusion membranes have their own distinctive features. Let's take a look at how they differ:

• They differ from each other in terms of vapor permeability.
• There are differences in tensile strength.
• Different types of roofs heat up in different ranges, so only a certain type of diffusion film is suitable for each coating.
• Density and type are also different in all species. Different diffusion membranes have a different base (polypropylene or polyethylene).

The strength of the material depends on the density. If the density is high, then the strength is also high.

• The ability to withstand the pressure of a water column.
• Each specific type has its own service life.
• They are divided into "breathing" and "non-breathing" diffusion membranes. "Non-breathing" ones are much cheaper compared to "breathing" ones. However, the first type is not suitable for all types of roofing. In the end, you will spend your money on other procedures. In addition to money, you will spend a lot of time and effort. If the roof has a complex structure, then the "non-breathing" film will not be able to provide the necessary air flow in the ventilation gaps.

You can not save your money on the choice of this material.

Features of the installation of a diffusion membrane

During installation work with a diffusion membrane, the following rules should be observed:

• It is laid on the flooring, while parallel to the structure of the eaves.
• It is strengthened with a stapler, starting from the top layer.
• The strips overlap each other with an overlap of five or seven centimeters.
• The intersections of the rolls are glued with special glue.
• To ensure moisture insulation, the installation sites of the battens are covered with sealing tape.
• In those places where there is a chimney outlet, the membrane is installed with a margin of ten centimeters above the roof, the ends are reinforced with a special adhesive tape, and corner cuts are processed in the same way.

How much does it cost to install a roofing membrane?

It must be remembered that the cost of waterproofing the roof, depending on the material used, averages three percent of the cost of all roofing work. In this case, excessive savings will affect the performance of the roof, its service life. The estimated cost of a diffusion membrane includes several components, these are:

• total roof area;
• material used;
• installation location;
• manufacturer company.

Diffusion membranes are most often sold in rolls, but some manufacturers release membranes based on the required area, that is, by quadrature. So the price of Tyvek Solid material is about four thousand rubles per roll, and for TechnoNIKOL jtd you will have to pay forty-three rubles, but only for one square meter.

Outcome

Summarize. In this case, you can not save on the choice of the necessary material. The choice of diffusion membrane must be approached with all seriousness. When purchasing a diffusion film, you need to pay attention to the following characteristics: vapor permeability index, tear resistance index, density and type, ability to withstand the impact of a water column, service life. In addition, consult with the seller of building materials.

Diffusion membranes allow steam to pass through, retain water and air flow, provide protection to the insulation and internal components of walls and roofs. This material reduces the heat loss of the roof cake. If you are installing a roof space and the roof is not ready yet, then a diffusion membrane can replace it for two or three months. This material is perfect in areas where there is a huge amount of precipitation and a very harsh climate prevails.