Diffusion membrane installation. Universal hydro and vapor insulator isospan d How to install the membrane - from the inside or outside of the insulation

A waterproofing membrane is a material that is used to protect a building from moisture, condensation and precipitation.

The waterproofing membrane protects roofs, floors, walls and other parts of the house from the negative effects of moisture. Without a waterproofing membrane, the insulation will quickly get wet and lose its heat-insulating properties. This will directly affect the temperature in the house and heating costs.

In the article we will talk about the features of the waterproofing membrane, its types, the basic rules for choosing and laying.

Often people confuse waterproofing membranes and vapor barrier films. Despite their similarity (production material, thickness, density), they have one fundamental difference. Namely, the principle of action.

The vapor barrier film protects the insulation from the internal moisture of the house. This is especially true in rooms with high humidity. For example, in the bathroom.

The vapor barrier film does not allow steam and moisture to pass through. Waterproofing is another matter. In addition to moisture and windproof properties, it has vapor permeability. This is necessary to remove moisture, which still seeped into the insulation. The membrane has microscopic pores that allow water molecules to pass through.

The waterproofing membrane belongs to a large group of polymeric insulating materials. The membrane is strong enough, not afraid of temperature changes, flexible and easy to use.

The main properties of waterproofing membranes:

• elasticity;
• strength;
• good weather resistance;
• not afraid of temperature changes;
• durability.

Membranes are used in the following areas:

Waterproofing membranes are of the following types:

Diffusion membrane

More different complex structure, how plain film. The pores of the membrane resemble microscopic funnels. Due to this property, it does not let steam through. outside, but perfectly removes moisture from the inside.

When installing such a film, the narrow part of the pores is laid out to the roof, and the wide part - to the insulation. Requires a ventilation gap on both sides of the membrane.

Super diffusion membrane

According to the principle of operation, it is similar to a diffusion membrane. The main difference lies in the speed of moisture removal - superdiffusion film does it much faster. As a result, ventilation gaps are not needed.

Anti-condensation membrane

Some types of roofing (for example, metal tiles) are very sensitive to condensation on the inside. To solve this problem, an anti-condensation membrane is used. She doesn't let out excess moisture. Instead, the membrane retains water from back side with their smallest hairs. Thus, moisture can escape through the air currents of the ventilation gap.

The shape of the membrane is of the following types:

Waterproofing membrane Ondutis D (RV)

Ondutis D (RV) is a gray fabric with a protective layer and an additive of a UV stabilizer, which withstands direct solar radiation for 1.5 months. Can serve as a temporary roof.

The Smart D (RV) base has a self-adhesive tape. This greatly simplifies the installation process. It can also be used as a hydro barrier in basements.

The main function of waterproofing is water protection. Therefore, the most important parameter- water resistance (measured in mm of water column - the higher, the more effectively the membrane retains water). Another one important characteristic- breaking load. The higher it is, the stronger the material.

Also, do not forget about the price. Comparing different types membranes, it is best to focus on the cost of 1 square. meters of film. Read more about the features of the choice of waterproofing in the article:

Izospan is a non-woven building material that is used for insulation of residential and non-residential premises. In addition, it is necessary to protect against moisture and water. This is especially important when creating a house plan with an attic and a garage, which must be insulated with high quality water and heat.

The reader will learn in this article what types of isospan exist, what advantages this material has.

Izospan: material characteristics

Isospan film is now very common in the construction market. It is used as the first barrier layer during the installation of insulation: it prevents moisture from entering the main heat-insulating layer of expanded polystyrene or other insulation. The material consists of pure polypropylene, fully synthetic, therefore it does not completely absorb water. When creating an insulation plan, isospan should be taken into account in the work.

Attention! Izospan is highly recognized effective material for insulation of attics, garages, one-story buildings.

The attic is attic space, which can be used for storage or as living space. The roof itself becomes the walls of this room, which should be well insulated. Izospan insulates and protects against moisture and wind, while maintaining comfortable temperature inside the attic and the whole house.

Similarly, isospan coating is used to insulate garages and other one-story non-residential premises:

• protects metal from corrosion, wood from decay;
• prevents the occurrence of condensate and moistening of the insulation, which reduces the thermal insulation properties;
• reflects air currents, protecting the room from cooling and drafts;
• maintains a stable temperature inside the room, does not release heat.

The following advantages of isospan can be distinguished:

• waterproof;
• durable and environmentally friendly (does not emit harmful impurities);
• has high elasticity;
• protects from ultraviolet radiation;
• protects from the wind;
• does not release, reflects heat;
• withstands high pressure;
• durable (serves about 50 years);
• retains its properties in the range from minus 60 to plus 80 degrees Celsius.

In terms of creating comfortable conditions inside residential premises isospan plays important role, especially when arranging a house with an attic, a garage and other one-story outbuildings in the Russian climate.

Varieties of material, their technical features

Now quality producers create pure polypropylene and a film from it using high-tech equipment, controlling the quality of production. In Russia, domestic companies are opening that offer building materials similar to foreign companies in quality and more favorable in price.

When choosing products, you need to focus on the presence of isospan quality and safety certificates. Notable Manufacturers coordinate their production plans with the requirements of the legislation.

Now, when decorating houses and non-residential premises, 4 main modifications of isospan are used, which have their own characteristics.

Isospan A

This is a film (membrane), which perfectly waterproofs and helps to eliminate moisture, its vapors, from the insulation. This modification is used to protect against wind and water, increases the life of the insulation. It is applied to isolation of private houses, penthouses, garages and any other rooms.

This isospan is resistant to mechanical impact and pressure, completely neutral to bio-impact (mold, bacteria, etc.). Can stretch:

• longitudinally by 190 mm;
• transversely by 140 mm.

The material is fixed from the outside of the insulation as an additional barrier. For example, when insulating an attic, it is mounted on the roof with an overlap in wide strips.

Important! The smooth surface should remain outside, the film itself should not come into contact with the insulation material. Otherwise, isospan will not be able to qualitatively waterproof the room and the insulation.

It is necessary that the membrane lies flat, does not protrude, swell or sag. Izospan A is fixed with wooden slats and nails.

Izospan A can be seen in the photo:

Izospan V

This modification perfectly blocks the way for water vapor, which eliminates the impregnation of the insulation with steam.

Important! When creating a garage plan, this can be very important to keep the room where the car is stored from getting damp.

Izospan B is two-layer, used:

1. On the pitched roofs Oh.
2. On the walls: external and internal.
3. To save floors in the basement, attic (attic).
4. In garages and other non-residential premises.

The vapor permeability index is 7, the material can also be stretched: in the longitudinal direction by 130 mm, in the transverse direction - at least 107 mm.

Each layer of this material has its own functions:

• fleecy layer retains moisture and condensate;
• the smooth part allows you to firmly fix the film with insulation.

Unlike the previous modification, isospan B is attached to the inside of the insulation. Fastened from the bottom up and overlapped. In order for the film to capture vapors, condensate, there must be a free space of at least 5 cm above the fleecy layer.

The appearance of the packaging of isospan B can be seen in the photo:

Izospan C

It also consists of two layers, but is used to protect an uninsulated roof, floors between floors, floor insulation. Possesses high strength.

The film is used for steam and water insulation:

• uninsulated pitched or flat roof;
• frame, load-bearing walls;
• wooden floors located parallel to the floor;
• concrete floor.

1. Installation of non-insulated roofs (slopes) is carried out with an overlap (with a depth of about 15 cm), also fastened with wooden slats. When arranging the attic at home, this material perfectly isolates the room from moisture from the environment.
2. If we talk about wooden floors, then here the film is attached directly to the insulation with a slight free space from the floor (4-5 cm).
3. When insulating a concrete floor, isospan C is placed directly on the floor and pulled together on it.

Izospan C can be seen in the photo:

Izospan D

This modification is very durable, able to withstand great pressure and loads. It is used in roofing. In terms of waterproofing and protection against condensation, it perfectly withstands even a large crust of snow on itself.

Great for arranging the attic of a house or garage in regions with heavy snowfall. Material protects wooden structures and uninsulated roofs. Isospan D is insulated:

• flat and pitched roofs;
• concrete floors and ceilings at the basement level of the house.

The high strength of the film allows you to protect the living area from wind and moisture, even in cases where the roof passes moisture.

It is also mounted with an overlap horizontally in strips, fixed on the rafters of the roof of the house with the help of rails. Installation on a concrete floor is similar to the previous modification of isospan, because in many respects isospan C and D are similar in their characteristics.

Izospan D can be seen in the photo:

The main modifications are described above. building material, there are also varieties of these modifications that have different densities or additional qualities, for example, fire retardant additives, which give a greater fire safety and protect against fire.

Also, manufacturers timely attended to the creation of additional Supplies, which allow you to isolate seams and minor damage. We are talking about isospan adhesive tapes - these adhesive tapes allow you to isolate seam lines, uneven surfaces. Enough to working surface was dry and cleaned - isospan FL, SL adhesive tape will provide good impermeability of such places. There is even a metallized tape that has a high resistance index.

Important points for installing isospan

In the instructions for the use of isospan, the following points can be distinguished:

1. Stacking it insulating material does not require any special knowledge, it can be done by hand, taking into account individual features membranes.
2. The sales kit is always accompanied by instructions, which must be read carefully and acted according to the instructions. For example, if you fix isospan reverse side, then all the work will be meaningless - no isolation will occur.
3. Fastening to the tree occurs with the help of a stapler, one should not forget about sealing the seams, possible cracks with the help of isospan adhesive tape.
4. When a heat-insulating film is mounted, the metallized part should look inside the room, and the laying work itself is carried out butt-to-butt, without overlap. The seams are also sealed.

Izospan allows you to make life in your home comfortable and warm. The use of this film in the plinth or in the attic extends the service life truss system, wooden floors, creates a stable microclimate in residential premises. Isolation of the garage from moisture and condensate, allows you to make the room dry and safe for the metal coating of the car and other equipment.

Modern technologies greatly simplify the arrangement of your home. Approaching the issue responsibly, each person will be able to not know the problems in his home for a long time!

Properly selected universal hydro and vapor barrier can effectively protect any building structure against possible penetration of condensate, moisture or evaporation. That's an example.

Failure to use or incorrect selection of waterproofing and vapor barriers can lead to serious and even fatal operational problems, the elimination of which will require great amount time and money.

Packaging insulation "Izospan D

One of the most effective and including recommended universal hydro and vapor barriers is Izospan D, which has received wide, deservedly, application both in the CIS countries and, in fact, abroad.

Her specifications, coupled with unique properties, make this hydro and vapor barrier the most preferred for most types of building structures.

1 General information about "Izospan D"

Universal hydro and vapor barrier of the serial type "Izospan D" is a fabric fabric that is made of special high-tech polypropylene with a high degree strength. Universal hydro and vapor barrier of the serial type "Izospan D" has found its application in the following areas:

• Protection of various building elements, walls and structures from the possible penetration of condensate, moisture or various fumes;
• Hydro- and vapor-insulation in pitched roofs, with no thermal insulation of walls, for protection wooden elements(constructives) in the attic from possible precipitation, wind, stig and even condensate;
• Hydro and steam insulation of the roof (only flat type);
• Layered vapor barrier in cement screeds, usually used when installing a floor with a concrete, earth or, in more rare cases, some other base;
• Vapor barrier of basement ceilings and rooms in which there is constantly observed high humidity(cellars, attics);
• Temporary, limited to 3 - 4 months, steam and hydro-insulation of roofs, floors and various walls.

The technical characteristics of the described steam and waterproofing "Izospan D" are presented as follows:

• The standard size of the roll "Izospan D" for walls is 1.6 meters x 43.75 meters, there are 70 m 2 in the roll;
• The density of steam and waterproofing "Izospan D" is 105 g/m 2 ;
• Ultimate breaking load is not less than 1068/890 N/5 cm (longitudinal/cross section);
• As part of the basis is 100% polypropylene (as in);
• The resistance to possible vapor permeability is not less than 7 m 2 hPa/mg;
• The water resistance of the "Izospan D" vapor barrier for walls is not less than 1000 mm of water column;
• Possible temperature operating range - from -60 degrees Celsius to +80.

Insulating coating series "Izospan D

Despite the fact that this insulation product is the reference and most popular among all building products for this purpose, there are similar analogues.

However, as a rule, all hydro- and vapor barrier analogues of the first generation, which have old composition, while Izospan D belongs to the second generation of insulating materials.

2 Instructions for use

• Instructions for use for non-insulated roofs (only pitched type):

In all cases, for thermal insulation of this type, it is necessary to lay Izospan D with horizontal panels strictly along the rafters of the walls. Basic instruction installation "Izospan D" says that the installation of the material itself begins from the bottom of the roof.

And here it is important to pay attention to the overlaps of the canvases: between the horizontal and vertical joints, the overlap of the canvases should be no less than 150 millimeters.

It is necessary to lay and then fix the insulation film on the wall rafters on either side using wooden counter-battens. After that, a solid flooring made of boards should be installed along the counter-rails, or, in more rare cases, battens.

After this procedure, it remains only to glue the joints of the panels with a special one, it does not matter which company and manufacturer, construction tape (but it is recommended to use Izospan SL) as during installation.

• Instructions for use for a flat roof:

The roll must be rolled out on either side on the surface of the floor slabs or any other base (including walls). In this case, the overlap of the panels should be at least 150-200 millimeters.

To connect and fix them, it is recommended to use a product of the same series - a connecting tape of the Izospan SL series, or any other similar one. There is no fundamental difference in which connecting tape the overlap of the panel will be fixed with.

However, in this case, it is preferable to choose the product that belongs to the Izospan insulation.

A heat-insulating material or a special roofing covering is then installed on top of the film, functionally corresponding to the insulating insulation.

• Instructions for use for a floor with a concrete base:

In this case, "Izospan D" should be laid exclusively on concrete slab in the so-called "overlap". In this case, the final overlap of the panels should be no less than 150-200 millimeters.

And in order to subsequently remove possible irregularities on the surface, it should be applied over cement screed. This type of waterproofing is carried out with the introduction of material on the walls (either side) by about 10 centimeters, as during installation.

Thermal insulation roll of the Izospan D series

• Instructions for use for the basement:

The Izospan D product, like any other insulation of this type, protects the floor structure strictly from below. The product is attached to draft floor bottom on either side. In this case, for such a procedure, it is necessary to use wooden slats or a special construction stapler.

2.1 Overview of hydro and vapor insulation "Izospan D" (video)

After you have insulated the walls of the house, during which an inexpensive one has been chosen, a problem may arise that some areas of the walls become damp. In order to exclude such Negative consequences a vapor-permeable membrane must be used.

Application features

The process of wall insulation and arrangement roof structures involves the use of such films that fit under the layer mineral wool. If you are faced with the task of warming from the inside, then it is necessary to provide a barrier to water vapor. It is not recommended to use material that has perforations or pores. The vapor permeability coefficient of this layer should be minimal. It is preferable to use a polyethylene film, which can be reinforced.

An aluminum-based foil coating will not be superfluous. We should not forget that when using a vapor barrier, you need to think about the presence ventilation system. There are also special films on sale, on which an anti-condensation coating is applied. Such a vapor-permeable membrane cannot form condensate on its surface. The material is usually placed under layers that are susceptible to corrosion. This includes galvanized sheet, corrugated board and metal tiles (the latter does not have a protective inner coating).

The film will not allow wet fumes to reach the metal. To do this, on the wrong side there is a rough fabric layer, which is necessary to collect moisture. It is necessary to lay the film with an anti-condensation coating with the fabric side down, stepping back about 2-6 cm from the layer of mineral wool. Those building membranes, which can pass evaporation, are used when insulating walls from the outside, they protect materials from gusts of wind and can be laid in pitched roof structures. Their use is also advisable in non-hermetic facades, when it is necessary to lay a protective layer against moisture. For vapor permeability, the films have perforations and microscopic pores. Moisture that accumulates in thermal insulation must pass through them into the ventilation system.

The main types of vapor-permeable waterproofing membranes

The vapor-permeable membrane is of several types. It:

• prediffusion type material;
• diffusion membrane;
• superdiffusion membrane.

The first variety is able to pass about 300 g of vapor per day. This indicator is valid for every square meter. If we are talking about the coefficient of vapor permeability can vary from 300 to 1000 g/m 2 . For superdiffusion membranes, this figure exceeds 1000 g/m 2 . Due to the fact that pre-diffusion membranes protect against moisture, they can be used under the roof as an outer layer. It is necessary to provide air gap between insulation and film.

With such materials, they cannot be used, since they do not pass steam well. After all, when the street is dry enough, dust can get into the pores from the ventilation. This will cause the film to stop "breathing", and the condensate will settle on the insulation layer.

Vapor Permeable Membrane Reviews

The vapor-permeable membrane must be laid using a special technology. If we are talking about a diffusion or superdiffusion membrane, then the pores here are quite large, so they will become clogged pretty soon. This necessitates the presence of an air gap for ventilation from the bottom side. According to users, this does not have to bother with installing the crate and counter-rail. On sale you can find not only diffusion films, but also their voluminous variety. As buyers emphasize, a layer for ventilation is located inside them. Due to this, condensate is not able to penetrate inside the metal roof. The principle of operation of such a material is the same as that of an anti-condensate film. However, there are also differences. As home masters emphasize, bulk membrane able to remove moisture from the insulation. After all, if metal roof has a slight slope between 3° and 15°, condensate from the underside cannot flow down. It will undermine the galvanized coating and gradually completely destroy it.

How to install the membrane - from the inside or outside of the insulation?

Vapor permeable waterproofing membrane must be carried out according to a certain method. If it is necessary to thermally insulate the facade, then the steam removal film should be located on the outside. Whereas if the roof is to be insulated, then a film with an anti-condensate coating of a volumetric or diffusion type is laid on top of mineral wool. In this case, it is necessary to follow the technology that is used in the arrangement. If the roof does not have insulation, then the film layer should be at the bottom, under the rafters. With thermal insulation top floor rooms under the attic, a vapor-permeable membrane must be laid below the insulation. A vapor-permeable waterproofing membrane should also be used when internal insulation walls. In this case, it should not have perforation, but it should be laid on top of mineral wool, inside the room.

How to lay the membrane - inside out or face down?

As practice shows, for many people it remains a mystery which side to lay the vapor-permeable membrane. If the film will have the same wrong side and front side, then the question is immediately removed. However, it is not always possible to find double-sided films on sale. If we are talking about an anti-condensate variety, then there will be a fabric side from the inside, and during installation it should be facing the inside of the room. This should also be referred to metal coating on foil membrane.

If a vapor-permeable diffusion membrane was purchased, then you should read the instructions. In it, the manufacturer usually indicates the technology of laying the material. However, the same company can produce single-sided and double-sided films. Define external and inner side possible by color. If the membrane has two sides, then one of them is colored more bright shade, usually the outer side of the material.

How to choose a membrane

If you need a wind-moisture-proof vapor-permeable membrane, then you can pay attention to the Izospan A option most often purchased by customers, which is designed for installation in the under-roof space. It is used to protect against condensation and wind elements of walls and roofs during the construction of a building. The membrane must be under roofing or wall cladding on the outside of the thermal insulation. outer side- it is water repellent smooth surface, while the inner one has a rough anti-condensate structure. It is designed to retain moisture, followed by evaporation in the air stream. This windproof vapor permeable membrane is convenient to use, it is characterized by high mechanical strength and environmental safety. Vapors do not harmful substances, and the properties of the material can be preserved for a long time. The material is resistant to bacteria and chemicals.

Features of laying the material "Izospan A"

The wind-vapor-permeable membrane "Izospan A" is used as a windproof membrane in the arrangement of thermally insulated roofs, the angle of which should not be less than 35 °. As outer coating profiled sheets or shingles may protrude.

Features of the membrane "Megaflex"

Do you need a vapor permeable membrane? Which is better, you need to decide before visiting the store. One of the types of such materials is "Megaflex", which is a three-layer structure. The two outer layers are micro-perforated and the inner layer is reinforced film. give the material strength, while double-sided lamination provides waterproofing properties.

The material has microperforations, which guarantees the ventilation of water vapor coming from interior spaces. This moisture-proof vapor-permeable membrane is able to protect the under-roof space from moisture, dust and soot, to protect materials from external moisture and internal condensate. If wind protection is needed, then the Megaflex D 110 Standard variety should be used, which is rolled out with horizontal panels with an overlap of 15 cm.

Conclusion

A hydro-windproof vapor-permeable membrane that protects materials from moisture, wind and vapor must be present in insulated roofs and ventilated facades. In the first case, the gap is equipped by constructing a counter-lattice, while when insulating the facade, the gap can be obtained by installing horizontal profiles or racks.

Döcke Extrusion offers versatile superdiffusion membranes for roofing and façade installations.

D-folie membranes (A150, A 125, A100)

Hydro-windproof three-layer super-diffusion membranes for pitched roofs and ventilated facades, consisting of a high-strength vapor-permeable combination of films based on polypropylene nonwoven fabric. Effectively remove steam, do not let water through and are not blown by the wind. Superdiffusion membranes are laid directly on the insulation, which greatly simplifies and speeds up installation.

Due to the high vapor permeability (from 3000 g/sq.m per day), the residual moisture of the insulation and rafters is reliably removed from the roof structure to the external environment.

The material has high tensile strength when fastened roofing nail. D-folie superdiffusion membranes (A150, A125, A100) withstand UV radiation for up to three months without loss of their qualities. This makes it possible to lay the roof and close the facade with a delay.

Vapor barrier films D-folie (B90, BR+)

D-Folie films (B90, BR +) are used as a vapor barrier layer in structures: insulated pitched roofs, frame walls, walls with external insulation, ventilated facades, attics and floors. Prevents penetration of heat humid air from the room to the heater.

In addition, D-Folie BR+ films, due to the presence of a reflective layer, reduce heat loss, create an additional insulating screen, and reflect heat. This results in greater efficiency heating appliances reducing energy and fuel costs.

Application of superdiffusion membranes and vapor barrier films D-Folie

The use of D-folie superdiffusion membranes (A150, A125, A100) and D-Folie vapor barrier films (B90, BR+) will help protect your home from problems such as:

• roof leaks;
• blowing heat out of the insulation, losing its thermal insulation properties;
• the flow of steam from residential premises, waterlogging of the insulation with the loss of its properties;
• the appearance of mold and fungus that are dangerous to human health;
• premature decay and destruction of load-bearing structures.

Advantages

• No through holes
• Three layers ultrasonic welded;
• Not blown;
• Does not pass water;
• Efficient steam removal;
• You can step on your feet;
• It is placed directly on the heater.

Traditional membranes consist of a single-layer fabric created by weaving thin plastic threads, forming narrow through passages through which water penetrates only in the form of steam. Such membranes are called spunbond according to the technology of their manufacture. Membranes of this type do not impede the passage of steam through them and can be blown by the wind.

Superdiffusion D-folie 3-layer membranes work differently. The two outer layers are classic spunbond for strength and UV protection.

The central layer is polypropylene film, which contains a special substance that allows the film to conduct vapor molecules, while remaining waterproof and windproof.

The possibility of laying the film directly on the insulation without an additional counter-lattice greatly simplifies and speeds up installation.

D-Folie superdiffusion membranes can withstand UV radiation for up to three months without loss of their qualities, which makes it possible to lay the roof with a delay.

Advantages over spunbonds

Increased efficiency of vapor permeability - a guarantee of the dryness of the insulation, regardless of external conditions.

Reduced heat loss - D-folie membranes do not let the wind through at all, taking with it a large proportion of heat.

The invariability of working properties over time - there is no clogging of pores (capillaries) and a decrease in vapor permeability, as with traditional membranes.

The possibility of laying D-folie membranes directly on the insulation simplifies the construction of the roof and reduces labor costs during installation.

D-folie membranes are manufactured in Europe, in a factory certified according to European standards. Similar membranes are exported to such countries as Germany, France, Great Britain.

Attractive price for a new generation product.

The calculation of the thermal conductivity of the material must be made taking into account the fact that the air inside the insulation itself is dry and motionless. Such recommendations are contained in the Code of Rules "Design of thermal protection of buildings" (clause 8.14):

“When designing walls with a ventilated air gap (walls with a ventilated facade), the following recommendations should be followed: apply rigid thermal insulation materials with a density of at least 80 - 90 kg / m3, having on the side facing the interlayer, wind-air-protective vapor-permeable films ... ".

According to the calculations of TsNIIPROMZDANII (Moscow), when using a heater without a windproof membrane, its thermal conductivity increases by 4 times. If all these factors are not taken into account, this will lead to the fact that the calculation of thermal insulation will be incorrect, and the consequences will be catastrophic.

Superdiffusion D-folie membranes (A150, A125, A100) will help to avoid these problems, which significantly increase the energy efficiency of the insulation design. They are windproof, which prevents heat from blowing out of the insulation, thereby reducing the cost of heating a house.