Technical characteristics of isospan. Isopan membrane as a means of reliable protection of insulation from moisture Isopan vapor barrier technical characteristics

Izospan – insulating material film type. It ensures the preservation of the original qualities of thermal insulation and is used in the most different areas. Therefore, it is worth considering in detail its advantages and disadvantages, and also learn how to properly install the material on walls, roofs, and foundations. This and much more will be discussed further.

Types and their properties

Thermal insulation keeps the house warm when it's cold, adds comfort when it's hot, and prevents the rooms from blowing out. However, he himself thermal insulation material needs protection from negative atmospheric phenomena. Such protection is provided by a polypropylene membrane - Izospan.

Such a fabric will successfully play the role of protection for thermal insulation. Despite its simplicity, this film material has differences: type A, type B, type C, type F, others. Each type has differences in technical characteristics.

Film matches construction GOST and has the following general qualities, which are confirmed by the manufacturer:

• thermal conductivity;
• density;
• waterproof;
• elasticity;
• resistance to negative influences;
• UV resistance;
• environmental Safety;
• Fire safety.

The properties of Izospan correspond to the classification of products. Classification is the letter indices that manufacturers use to designate the material they produce. Sometimes on sold samples you can see a combination of letter indices. Each new designation expands the possibilities of using the material. The performance qualities of any Izospan are high.

The material is widely used in the construction field. It is used for vapor barrier of both residential and industrial buildings. The properties of Izospan comply with sanitary and epidemiological standards. The material is supplied with fire safety and technical certificates.

In the production of Izospan, polypropylene is used. The base is melted down and then rolled out to a certain thickness using special rollers. The material turns out to be of a homogeneous structure and dense. The material is considered double-sided, and both surfaces of Izospan perform different functions.

If you lay the vapor barrier correctly, all the moisture will remain on the film, and it will condense on it. While on the film, the moisture will evaporate and will not harm the structures.

Today Izospan has received recognition as efficient material insulation of attics, garages, walls of private houses.

The properties of the material will protect metal coating from corrosion, and wood from rotting. The material prevents the penetration of air flows and will not release heat outside. When choosing products, you should focus on the quality of the main modifications, each of which has its own characteristic features.

• Izospan A plays the role of an excellent waterproofing agent. This modification also protects the insulation well from wind and water, thereby increasing its service life. Izospan A is suitable as an insulator for any premises, as it is resistant to mechanical stress and neutral to mold and fungi. The film stretches longitudinally by 19 cm, and crosswise by 14 cm. The material is used as an additional barrier and is attached to the outside of the insulation. Wooden slats and nails are used to secure the membrane.

• Izospan B– an excellent vapor barrier that will eliminate high humidity indoors. Double-layer Izospan B can be used on roofs, internal and external walls, on the floors of the attic. The material stretches longitudinally by 13 cm, and transversely by 10.7 cm. Unlike the previous modification, Izospan B is installed inside the insulation, secured with an overlap, taking into account the presence of free space between the layers.
• Izospan S– two-layer, known as good roof protection, frame walls, as well as a concrete floor. The membrane is fixed to the insulation, overlapping, wooden slats. To insulate the floor, it is laid directly on the surface.
• Izospan D– very durable, known as roofing protection in terms of waterproofing. In addition to roofs, Izospan D is used to cover concrete floors at the basement floor level. The material is mounted in horizontal strips and secured with wooden slats. In addition to the main modifications, there are additional varieties of Izospan, the purpose of which is worth considering in more detail.

Purpose

The variety of materials in the Izospan line is wide. In addition to basic materials, you can find related products on sale, namely adhesive tapes and adhesive tapes.

• If connecting tape SL Fix the hydro- and vapor barrier strips together to ensure better tightness of the connecting seams. Installation with connecting tape is carried out at moderate temperature conditions, and the surfaces to be joined must be dry and clean.
• FL tape You can connect the canvases and repair minor damage. This is a metallized tape with excellent durability. The wear and tear strength of this tape is also high.

• Unilateral Scotch tape ML characterized by high-quality adhesion. The Proff modification material proved to be especially effective difficult cases, as it helps in connecting uneven surfaces, different bases, for example, brick and concrete, porous surfaces. Izospan ML allows you to glue plywood, wood and plaster surfaces together. The material ensures better connection of pipes and windows to window openings.
• Izospan KL allows you to glue two panels together. Well seals the overlap points of the material. Izospan KL is glued to the upper edge of the insulated panel, paper side up. It is pressed against the bottom sheet with a slight movement of the hand at a certain distance from the edge. Then the paper side is removed from the tape and both edges are pressed against each other. Installation of the material is carried out on clean, dry sheets at above-zero temperatures. environment. The basis of the adhesive layer is water-dispersed modified acrylic. Izospan KL does not contain solvents.

Waterproofing is applied according to general instructions for ceilings, walls, subfloors.

The work associated with laying the membrane is simple and does not require special qualifications.

• Regardless of the installation location, smooth surface The film should always face the thermal insulation. Incorrectly laid sheets will not add to the effectiveness of insulation, and the structure will not achieve a vapor barrier effect. Each type of product is accompanied by instructions. Its strict observance will not allow you to make mistakes in your work.

• Lay the material tightly to the surface with a slight edge in the corners. Place the canvases with an overlap, the size of which should be about 15 cm. If the membrane is attached to wood components, you can use furniture or construction stapler. Seal the resulting seams with tape or tape.
• If a reflective film is mounted, then it must be installed with the metallized side facing the inside of the room. Laying must be done without overlap, end-to-end. Cover the joints with adhesive tape.
• If you are performing a vapor barrier on an insulated roof, then lay the film from below. Lay out the appropriate canvas horizontally, tightly to the rafters, avoiding windage. Wooden slats 4 x 5 cm wide, treated with an antiseptic, are suitable as film holders. This lathing will ensure free evaporation of condensate.

The general view of the system will be as follows:

• interior decoration;
• Izospan B, C;
• rafters;
• insulation;
• waterproof membrane;
• roof covering.

Vapor barrier of internal partitions of the house is needed if the interior floors are framed.

In this case, Izospan V can be installed on any side of the wall. A stapler or special nails are used for the work. Izospan should be laid horizontally, starting from the bottom. Izospan is fixed with slats, and Izospan A can be mounted on the other side of the wall. General form:

• finishing;
• rail;
• vapor barrier;
• frame;
• insulation;
• moisture protection;
• rail;
• finishing.

Izospan can be used as a vapor barrier for interfloor ceilings.

The material is laid on the rough base of the ceiling with the rough side down. If the membrane is spread on the floor joists, above the insulating layer, then the smooth surface should be laid upward. Clearances required:

1. Between the insulation layer and the vapor barrier layer.
2. Between floor finishing and vapor barrier.
3. Between the ceiling finish and Izospan.

General form:

• ceiling finishing;
• slats;
• vapor barrier;
• rough floor construction;
• beams;
• insulation;
• vapor barrier;
• slats;
• floor finishing.

Like any building material, Izospan has its pros and cons. Let's take a closer look at the technical advantages and disadvantages, as well as consumer reviews.

Advantages and disadvantages

Main advantages of the material:

• Lasting. Izospan does not tear during installation and has a long service life.
• Reliable. When laying the material, other materials will remain dry in the most negative conditions.
• Universal . The material can be used on any type of structure when installing any insulation.
• Environmentally friendly. The film does not highlight harmful substances in atmosphere.
• Practical.
• Fireproof.
• Convenient to install.

Izospan perfectly ventilates accumulating condensate, significantly improving the characteristics of the insulation. The walls remain dry, so fungi and mold do not appear on them.

Among the disadvantages of Izospan, it is worth noting the need for mandatory treatment of wooden structures with antiseptic agents.

There are other disadvantages:

• if the insulation technology is violated, condensation may form at the joints of the material;
• vapor barrier rolls cannot be installed immediately; they must be kept in a warm room;
• the vapor barrier process is impossible if phenomena such as fog or rain are observed;
• when installing Izospan on concrete surface basement, it is recommended to warm it up using heat guns.

Consumer reviews of the material are generally positive.

• For example, users write about the qualities of Izospan S that work with it can be carried out simultaneously with laying the cake. The material allows you to save on installing the sheathing. The thermal insulation is in good condition after two years. There is no heat loss or appearance of wet spots.

• Another user notes characteristics of Izospan AS. One of the advantages is the high speed of installation. The material also has disadvantages - it is thin, the canvas breaks during fixation to the frame. In addition, for this type of material it is difficult to determine right side styling, since both of them are smooth.
• In contrast, FB series variant easier to determine. Users note good roughness on the correct reflective side. However, the material is expensive, since its width is non-standard. The investment pays off in future use.
• Sides of Izospan B are also easy to identify. The smooth side of the material must be mounted to the insulation. The vapor permeability of the material is high, the cost is quite justified.

Features of use

The sides differ in appearance and to the touch: one is smooth, the other is rough. It is believed that Izospan should be laid with the smooth side facing the insulation. The rough side of the film should touch the insulated vertical. The roughness of Izospan effectively absorbs condensation. Without a vapor barrier, condensation will always flow down to the floor structures. Condensation harms both wood and concrete foundations. Let's look at some special types of Izospan vapor barrier in more detail.

FB series vapor barrier used in interfloor wooden floors, for walls inside steam rooms, saunas. The FB series is based on kraft paper and metallized lavsan. The features of structured Izospan allow you to effectively reflect thermal energy. There is no need to attach the FB series to the outside, since the material perfectly withstands temperatures with dry steam up to 140 degrees.

The strength characteristics of the material are excellent, it is environmentally friendly.

The use of Izospan can reduce heat losses in the steam room. The same vapor barrier will prevent dampness from entering the wall structure.

Izospan FB roll dimensions:

• width – 1.2 m;
• length – 35 m.

The material can be used in the temperature range from -60... +140 degrees. The technical characteristics of the material comply with GOST. Performance may be degraded by exposure to UV radiation.

The materials of the series: FD, FS, FX have similar characteristics. These are vapor-permeable membranes that prevent water vapor from escaping into the atmosphere. The materials are waterproof, water-resistant, and have an energy-saving effect. The materials are able to reflect infrared thermal radiation and protect floors from steam. The use of vapor and waterproofing allows you to reduce the period of warming up the room and provides significant savings on heating the room.

Izospan AS series it is at the same time waterproofing, vapor barrier, and windproofing. The membrane has three layers, protects against gusts of wind, moisture from external environment insulation, roofing elements, walls. Izospan AS series can be mounted on insulation without a ventilation gap. As a result of using the series, expenses for lathing between the insulation and Izospan are eliminated.

The membrane is diffusion and has shown good water resistance and hydrostability. The use of this film has a positive effect on increasing the service life of the entire structure.

The material is produced in rolls 1.6 m wide and 70 m long. The effects of UV radiation, as in the previous version, are reduced quality characteristics material. Primordial technical qualities comply with GOST.

The AM series membrane has similar characteristics. The material combines the characteristics of water resistance and vapor barrier.

The scope is quite wide:

• insulated sloping roofs;
• frame type walls;
• walls with external insulation;
• ventilated facade;
• attic floor;
• internal verticals.

Separately, series A film with OZD can be used for ventilated facades. This vapor-permeable membrane will protect the façade elements from wind and precipitation. The film will not allow vapors to escape from any type of insulating material. Film width 1.6 m, roll length 70 m.

Separately, the RS series material can be used as a roof vapor barrier. The film is suitable for non-insulated structures. She will protect wooden elements from the action of condensation, from penetrating atmospheric phenomena. How is a vapor barrier suitable for flat designs roofs

Another type of film that is suitable for uninsulated roofs is Izospan RM. Three-layer material with reinforced mesh made of polypropylene. In addition to protection roofing structures, can be used to protect genitals concrete floors. In this case, it acts as a waterproofing layer.

Which to choose?

If a material is selected as a vapor barrier for a roof, then the following points are taken into account:

• temperature phenomena at the location of the building;
• purpose of the roof (operational, non-exploitable);
• design roofing pie.

The vapor barrier layer, first of all, must be completely sealed. This quality is very important for such materials. Self-adhesive connecting tape or tape is not in vain recommended for sealing seams.

If a vapor barrier is selected for a bathhouse, it is desirable to minimize the possibility of fire, therefore FD, FX, FL Termo, foil vapor barrier are the most suitable options for similar structures.

It is important to take into account that the bottom layer of the roofing cake must be non-flammable. The fire resistance of a bathhouse roof will be increased if the vapor barrier film is laid so that its edges extend beyond the insulation. Experts advise gluing the membrane to the wall and additionally securing it with galvanized strips.

Unlike roofing felt and glassine, Izospan – modern material new generation. The diffusion film has lower vapor permeability in comparison with the membrane discussed in this article: it can be used for both hard and soft roofs.

Diffusion membranes usually consist of several layers. The product combines polypropylene fabric and polyethylene laminate. The cost of this type of vapor barrier is quite high.

However, other analogues also have advantages and disadvantages. For example, types such as roofing felt and glassine, have low cost. However, today few people will use roofing felt for vapor barrier of the roof of a residential building. This is a material for household use. Glassine is also not used as the main hydro- and vapor barrier.

The utilization rate of bitumen membranes is also low. This material is used to vaporize concrete roofs. This type is mounted by heating and then gluing to the base. The main disadvantage of the material is its heavy weight.

Almost all of the above types of materials are combined with Izospan, which is presented on the market in 14 varieties. Class A of Izospan alone combines several film options, for example, AS, AM, with different strength, density and vapor transmission ability.

RS series of Izospan is a unique, universal product that can completely replace all materials together. The material is indispensable in many construction fields, as it has increased strength and does not harm interior decoration. The sealing reinforcing mesh made of polypropylene will prevent the formation of harmful fungi and mold, as it creates additional protective layer both for materials and structures.

The length, thickness, weight, and number of meters per roll vary depending on the class of the material. The division looks like this:

First grade

Izospan A

• width, m - 1.6
• size, m² - 35, 70

Second class

Izospan B

• width, m - 1.6
• size, m² - 35, 70

Izospan S

• width, m - 1.6
• size, m² - 35, 70

Izospan D

• width, m - 1.6
• size, m² - 35, 70

Izospan DM

• width, m - 1.6
• size, m² - 70

Third class

Izospan FS

• width, m - 1.2
• size, m² - 70

• width, m - 1.2
• size, m² - 35

• width, m - 1.2
• size, m² - 70

• release:
• width, m - 1.2
• size, m² - 36

The indicators of different manufacturers are generally the same. Let's talk in more detail about the most famous suppliers of this building material and user reviews.

Well-known manufacturers and reviews

The following manufacturers of vapor barrier films that can be installed indoors receive positive reviews:

1. Ondutis;
2. Izospan B;
3. Izospan D;
4. Delta Reflex;
5. Delta Luxx;
6. Tyvek AirGuardSD5;
7. Tyvek AirGuard Reflective;
8. Stroybond V;
9. Izobond V.

Famous manufacturers water vapor barrier, which are also characterized by positive side and became widespread as temporary roofing:

1. Ondutis RV;
2. Ondutis RS;
3. Izospan D;
4. Stroybond D;
5. Isobond D.

1. Ondutis a100;
2. Ondutis a120;
3. Izospan A;
4. Izospan AM;
5. Izospan AS;
6. Delta Vent N;
7. Tyvek soft;
8. Tyvek solid;
9. Stroibond A.

It is widely believed that the properties of hydro-vapor barrier films are better than those of simple vapor barrier materials. Users note the durability of Italian reflective films.

Laying method

1. It is necessary to lay any vapor barrier on any type of roof after laying the insulation. It can be placed under corrugated board.
2. Waterproofing can be laid in any direction.
3. If the material is laid along the rafters, the overlap should be directly at the level of the rafters. At these same points of contact, the material must be carefully fixed.
4. At points of contact with water pipes that may pass through the roof, the membrane is folded down, wrapped around the pipes and carefully taped.
5. Some types of materials require mandatory air gap. To create this space, only thin wooden planks. They are located at a distance of about 50 cm from each other.

General rules Installation of the film requires strict adherence to the instructions for use. Laying technology on vertical and inclined surfaces should be done from top to bottom. The film strips should be laid horizontally correctly. The film must be overlapped by at least 15 cm. The joints must be taped with adhesive tape for reliability. If the wall is finished with plasterboard, the film should be laid with the rough side facing the plasterboard and the smooth side facing the insulation.

• When laying a vapor barrier on the roof Izospan can be fixed directly to the rafters. For fixing, bars or thin clamping strips are suitable. Finishing: drywall, plywood, lining, etc., mounted on top of the vapor barrier. If bars were used for fixation, the trim can be mounted directly on them. A gap forms between the film and the finish. The ventilation gap will ensure better drying of condensate.
• If Izospan used for insulating walls indoors, then first you need to secure the bars vertically. If plasterboard is used as finishing sheathing, then a metal frame will do. After this, insulation is installed: mineral wool or polystyrene foam. A vapor barrier is attached to the bars using slats or a stapler. The next step is to install the final finish.

• If the walls are insulated from the outside, the procedure should be reversed. First you need a sheathing of bars. Then a vapor barrier is attached to this structure. Next comes the heat insulator, and on top of it is a waterproofing film. The final stage will be the installation of finishing.
• If a vapor barrier is used for the floor, first you need to lay waterproofing between the joists. Then the insulation is installed. A vapor barrier is mounted on top of the insulation. Bars are suitable for fastening it. Floorboards are installed on top of the vapor barrier.
• When installing an interfloor ceiling the previous steps are practically repeated. If necessary, a vapor barrier can also be installed on the ceiling from below. The ceiling trim is mounted on top of the vapor barrier.

• ​​​​​​If the vapor barrier is damaged during installation any structural elements or torn areas must be repaired. To do this, you can use adhesive tapes or special glue. The material is very reliable in installation and is more expensive than usual polyethylene film. However, the quality characteristics of Izospan significantly exceed the quality of the film.

The following tips will help you get the job done well.

1. When laying any vapor barrier materials, ensure the quality of the joints. If they are poorly glued, the ceiling usually sweats, and the effort from the work done is practically reduced to zero.
2. The easiest way to seal any hole in the membrane is with a special sizing tape at least 10 cm wide. A narrower tape will simply come off.
3. Leave folds of material 2-3 cm wide around windows and other openings, especially if the building is new. In this case, deformation reserve must be provided.
4. If a vapor barrier membrane is installed around skylights, then it must be protected from the inside with a special finish.
5. If the membrane needs to be fixed on a rough surface of brickwork or wood, it is better to use adhesives with an acrylic or rubber base.
6. Polyurethane-based adhesive tapes are not recommended for use by specialists. It is believed that due to insufficient adhesiveness, they move away from the base over time.

For information on the use of Izospan, see the following video.

Izospan materials are used to insulate surfaces from moisture. They demonstrate the required level of fire safety and, in addition, help retain heat inside the room. The consumer is presented with a wide selection of products that have the necessary for the organization high-quality insulation properties.

Properties

When installing waterproofing, Izospan is mounted directly on the rafters to protect the insulation from moisture accumulation. Vapor barrier film is also used for thermal insulation of attic floors, ceilings, and walls of rooms. On wooden structures To isolate them from the outside, a vapor-permeable membrane is applied. Before buying film, you need to understand what types the market offers in terms of characteristics and purpose. The range includes rolled materials from non-woven fabrics produced in accordance with GOST. The differences in the supplied product can be seen not only in their density, but also in their structure.

A non-woven fabric membrane (to create a vapor-permeable barrier) is intended for external insulation of roofs and wall structures. The material protects from moisture and wind. In addition, the diffusion film performs another function - it does not condense moisture inside the wall structure. Class A isospan does not allow water to pass through, it is easy to handle and can withstand different temperature loads, which allows you to increase the service life of buildings. In addition, it perfectly protects them from dampness, decay, mold and corrosion.

Similar material worth buying due to its high resistance to negative factors, durability and excellent technical characteristics. It can withstand heavy loads without losing its shape, and also withstands the effects of ultraviolet rays.

You will also be pleased with the ease of installation: the user will be able to install the barrier themselves using a minimum amount of available tools. Izospan A is used to protect basements and attics. Its density is 110 grams per 1 square meter. It is produced in rolls 140 cm wide and 50 meters long. Are common:

• specifications
• elasticity;
• excellent strength;
• is not a source of harmful substances;

Can handle high blood pressure.

The material can withstand temperature changes from – 60 to + 80 degrees. The composition contains fire-resistant particles that give it unique properties. Izospan A is a type of membrane that protects the surface of walls and ceilings from moisture condensation. Tensile strength – 190/140 mm, resistance to ultraviolet radiation – 3–4 months.

When installed on a roof, the material is cut into wide strips and applied so that the smooth surface remains on the outside.

Installation begins from the bottom of the roof. At the same time, when working with Izospan, you should not allow contact with it, since the waterproofing properties in this case are significantly reduced.

The product is made from pure polypropylene. It does not absorb moisture, so it is permissible to use the membrane for insulating residential and industrial buildings. Thanks to its properties, Izospan guarantees long-term protection for wood from rotting, and for metal from corrosion. It is especially important to use the material in regions with harsh climatic conditions, as well as increased wind loads. The membrane not only perfectly retains moisture, but also guarantees the absence of drafts (if it was installed in compliance with the requirements of building codes). The membrane has a simple principle of removing moisture to the outside: the rough surface collects steam generated in the room, after which it seeps out through the existing micro-perforation.

Backside

smooth, so drops either roll down or evaporate.

This is why it is so important to lay the material correctly, without confusing the sides: the rough surface of the film should always be on the inside, that is, facing the room or insulation. If this requirement is not met, then the membrane will not work effectively.

• Advantages and disadvantages
• reliability;
• comes with fire retardant additives;
• multifunctionality;
• environmental Safety;
• ease of installation;
• vapor permeability;
• resistance to high temperatures (suitable for use even in bathrooms and saunas).

Thanks to its structure, Izospan prevents condensation from penetrating into walls and insulation, protecting their structure from the formation of fungus and mold. Many positive reviews ensured the popularity of the material for many years. Izospan A is a film membrane impermeable to air and moisture. Its use reduces the number of drafts, prevents moisture from entering and helps improve the quality of the indoor atmosphere. Additional use of a primer is not required before installing the membrane on most building surfaces.

Isopane A is an innovative material that contains components that make it possible to use it on surfaces with elevated temperatures. This is important in the construction of roofs of baths and saunas. Unique properties make it possible to extend the construction season and ensure year-round construction of buildings in areas with cold climates.

The product can withstand up to 12 months of direct exposure ultraviolet radiation, maintaining the integrity necessary for long-term construction projects. The material is lighter weight than competitive products. This property is indispensable when it is necessary to reduce the load on the structure. Long sections of canvas can be installed, which will increase the speed of work on site. The vapor barrier is installed horizontally or vertically, always with intersecting panels by 5 centimeters.

Overlapping installation avoids drafts. The membrane is compatible with various building materials such as gypsum, plywood, OSB, cement board, concrete, CMU, sealant. You can save on heat consumption, which allows you to install and use heating equipment in smaller rooms. Energy costs can be reduced by as much as 40%. The risk of mold and mildew also decreases.

Among the main disadvantages it is worth highlighting:

• poor moisture resistance;
• small area of ​​application.

If too much water accumulates on the surface of the film, the moisture will begin to roll inward. You should not use a single-layer film for roofing. In this case, a multilayer membrane is best suited. The manufacturer's instructions indicate that Izospan A can be used in roof construction, but it is desirable that the slope does not exceed 35 degrees. You should not purchase material if you plan to have a metal roof covering.

Application area

• Manufacturers offer a wide range of materials. All types of Izospan differ in density, as a result of which they can be either laid on the floor of a frame house or used in a roof structure.
• Izospan is one of the most popular types insulation due to price and unique properties. It is suitable for walls, ceilings, basement floors, attics and lofts. Hydrophobic fabric is widely used as a waterproofing layer on ground floors, cement screeds in wet areas and as a wind barrier. Vapor barrier is one of the main advantages of the material.

• The moisture-proof membrane can be used in the construction of a heated floor. The windproof function has significantly expanded the range of application of the material. Depending on the operating conditions, it may be necessary to create a ventilation gap of 40–50 mm, due to which moisture is evaporated. A special feature of the fabric is its ability to reflect thermal radiation.
• The rolled material is not afraid of water, is durable and easy to install, and is easy to use in the attic. Widely used as a roofing vapor barrier for pitched roofs and partitions. At the preliminary stage of roof construction, the plates are installed between the rafters. The second layer of film overlaps the top one by 15–20 cm without tension.

The Izospan operating instructions indicate the basic requirements for the use of the material.

• It is advisable to avoid the strips adhering to the edge of the ridge.
• A ventilation gap (50 mm) must be created, which provides an air flow that promotes the weathering of moisture.
• All connections are treated with sealing tape.

Izospan marked AF is distinguished by the presence of ignition protection, so it is used in flammable areas. The presence of the letters AM means three-layer construction film that can protect the building structure from any external influence.

On sale you can find material marked AQ. It is this film that has maximum insulating properties.

Installation subtleties

Before using Izospan film, it is necessary to check the insulation of the gaps between the insulation blocks, and if any deficiencies are found, correct them. Seal the contact points of the membrane with structural elements, for example, with windows. For vapor barrier of walls, Izospan A is used on the outside of the building, and Izospan B on the inside. During the construction of walls, Izospan A is laid in layers on their surface. The work is carried out from the bottom up. Fixation is done using a stapler. In this case, it is necessary to prevent sagging of the canvas, otherwise, with a strong wind load on the facade, unnecessary noise (flapping) may appear.

During roof installation, the material is cut directly into the rafters above the insulation. Laying is done horizontally. Start from the bottom of the roof. Fastening is done using nails (sometimes self-tapping screws). It is recommended (but not necessary) to leave a space of about 5 cm between the bottom side of Izospan and the insulation, and between the membrane and the roof there is a gap, the width of which is usually equal to the size of the rails.

As noted above, the placement of Izospan begins from the bottom row with horizontal stripes. The overlap must be at least 10 cm. The places where the film adheres to the surface must be glued together with mounting tape. This method is suitable for wood cladding.

It is very important to lay the material with the right side facing the insulation. Before installation, you must carefully read the instructions for use of the canvas. For external insulation of roofs and facades of buildings, it is necessary to use Izospan AND, AM, AS brands, which provide the necessary protection.

Different variations of Izospan A have and different densities material. For model A it is 110 g/m², for AM it is 90 g/m². The AS model has an indicator of 115 g/m², and the highest density is AQ proff - 120 g/m². To create a high-quality hydro- and vapor barrier, experts recommend using an additional Izospan V vapor barrier.

The installation diagram depends on the purpose of the structure. If it is a sloping roof without insulation, then the main structure is installed, then a vapor barrier layer, and then a wooden flooring.

In the attic, first the floors are laid, then the vapor barrier, then the insulation and slats, and lastly the beam. When using the membrane on concrete floor at the first stage, a base is created, then a screed is created, a film is laid on it, and then only finishing . If you want to achieve, it is necessary to strictly follow the manufacturer’s recommendations, observe the subtleties of using the Isopan material and be sure to take into account the characteristics of the surface on top of which the film layer will be laid.

is a line of polypropylene nonwovens, intended for vapor and waterproofing of structures.

Izospan protects structural elements and insulation from:

• rain, snow and wind;
• moisture generated inside the building;

Isopan is used in structures:

• roofs;
• insulated walls;
• attic floor;
• floors on a concrete base;

The technology for manufacturing non-woven fabric is fully automated. But at the same time, quality control is mandatory at every stage.

Izospan has a hygienic and fire safety certificate. Also, the products have been tested for compliance building regulations and GOST standards. As a result, a GOSTSTROY certificate was issued for it. Izospan has no analogues among similar domestically produced products.

Specifications

Characteristics of isospan B,C,D,DM:

Choosing vapor barrier materials, you need to pay attention to the following parameters:

1. Vapor permeability.
2. Strength.
3. Density.
4. Water resistance.
5. UV stability.

Isospan A has the highest vapor permeability (3000 g/m2/day), but it has the lowest water resistance (330 mm water column), which makes it possible to use it only on roofs with a slope angle greater than 35°. But nothing prevents you from using this material in .

Izospan AS and AD have a vapor permeability coefficient of 1000 and 1500 g/m 2 /day, respectively, but they are distinguished by their water resistance indicator - 1000 mm water column. As a result, they have become the main materials used for roof insulation.

If it is expected that the roof will remain uncoated for some period of time, it is necessary to use isospan AQ proff.

It alone is UV stable for 12 months.

The best tensile load indicator for isospan D is 1068/890 N/5cm, but it has the lowest vapor permeability - 3.7 g/m2/day. This allows the material to be used as a temporary roof for 3-4 months. Isospan B has a vapor permeability of 22 g/m2/day, and a tensile strength of only 130/170 N/5cm. In this regard, it is necessary to involve in its installation qualified specialists

and do not leave material in the open air.

Izospan C is an intermediate option.

1. Polypropylene film with a smooth top and fleecy bottom side. Villi are necessary to retain condensing moisture and prevent it from rolling onto finishing materials. Installed in front of the insulation in the following structures:
   • insulated roof;
   • walls;
   • floors;
2. Laminated fabric with a smooth and fleecy side. Thanks to the increased density, the scope of application of this material expands. It is used:
   • On unheated roofs, as moisture insulation.
   • In ceilings (including above basements and attics), as a vapor barrier.
   • In floor structures.
   • IN concrete screed, like a water barrier.
3. Polypropylene fabric laminated with film. Izospan D is widely used as:
   • Additional moisture insulation on unheated roofs.
   • Vapor barriers for any structures that need protection from water vapor.
   • Waterproofing layer in the screed.
   • Temporary roofing.
4. Membranes marked A, AS, AM, AQ proff protect the insulation from getting wet, weathering and remove condensation from the roofing or wall pie into the drainage system. Benefits of use:
   • Remaining moisture trapped in the insulation layer from the room is easily removed.
   • The likelihood of precipitation penetrating the heat-insulating material is minimized.
   • It becomes impossible to weather the mineral wool.
5. Membrane A. The polypropylene membrane has a smooth water-repellent side and a rough side that retains condensation. Membrane of this type has a low coefficient of water resistance, so its main purpose is to protect the insulation on the facade.
6. Izospan AS, AM, AQ proff. AS, AM are a membrane made of vapor-permeable material and a dense airtight substrate. Used for protection:
   • Frame type walls.
   • Ventilated facades.
   • Insulated roof.
7. Heat-reflecting vapor barriers FB, FD, FS, FX trap the smallest particles of moisture and radiant energy in the room. Advantages of using thermal and waterproofing reflective films:
   • Heat loss through building envelopes is reduced.
   • Heating costs are reduced.
   • Eliminates the possibility of mold formation in damp rooms;
8. Vapor barrier FB. Izospan FB is made from kraft paper, which is covered with a layer of metallized lavsan. Due to the fact that the material is environmentally friendly and can withstand temperatures up to + 120 ° C, it is used to insulate walls, roofs and saunas.
9. Vapor barrier FD, FS. Izospan FD, FS is a polypropylene film reinforced with a metallized layer. In isospan FD, a vapor barrier film of grade D is used as the base layer, and in FS, grade B is used. Manufacturers recommend using the described vapor barrier for interior decoration:
   • steam rooms;
   • attic;
   • as a heat-reflecting screen;
10. This material- This is foamed polyethylene, backed with metallized film. Polyethylene with a layer of bubbles is an excellent heat and sound insulator, and the metallized layer prevents heat leakage and retains steam and water. Izospan FX is the most cost-effective, safe and durable vapor, noise and heat insulator. Its disadvantage is that the maximum operating temperature is + 90°C, which makes it impossible to use it in steam rooms. It is actively used as:
    • Substrates for installing heated floors.
    • Reflective screen for .
    • Insulation on attic roofs in tandem with classic materials.

Reflective films can be used to insulate walls and ceilings only in rooms with forced ventilation, since these materials have zero vapor permeability.

Pros, cons and varieties

Heat Reflective Vapor Barrier Film

Advantages:

1. Environmental Safety.
2. A wide range of.
3. Reasonable price.
4. Reliability and durability.
5. Durability to mold formation.

Flaws:

1. Low durability to the fire.
2. Performs its functions only when installed correctly.

According to purpose, the material is divided into three types:

1. Steam and moisture insulation films.
2. Moisture and windproof vapor-permeable membranes.
3. Heat reflective vapor barrier films.

The first type includes vapor barrier films of grades C, B, D, which protect the insulation layer from moisture evaporating out through the enclosing structures.

Advantages of using vapor barrier film:

1. Increased service life insulation.
2. Reduces the likelihood of condensation formation and contamination of structures by fungus and mold.
3. Eliminates the possibility of entry into the premises volatile insulation particles.

Installation

Installation diagram of isospan on an insulated roof

To lay the material you will need:

• roulette;
• hammer;
• construction stapler;
• nails;
• wooden slats;
• scotch;

Laying isospan on the roof:

1. Insulation of the roof begins with fixing the vapor barrier film(B, C, D) to supporting frame or to rough sheathing.
2. Secure the material with staples or galvanized nails. For additional sealing, the seams are secured with special isospan SL or KL tape.
3. The panels are rolled out horizontally in the direction from bottom to top. An overlap of 15-18 mm is made between adjacent canvases.
4. During installation, you need to ensure that the film adheres tightly to the insulation.
5. On top of thermal insulation A, AS, AM, AQ proff.
6. Izospan A is secured to the rafters with antiseptic counters nails or screws, so that a gap of 5 mm is formed. Izospan AS, AM, AQ proff, on the contrary, should fit tightly to the insulation. Therefore, it is secured to the rafters with staples or galvanized nails.
7. Installation begins from the bottom of the slopes. Along the overhang of the slope, the membrane is inserted into the gutter. The canvas is rolled out horizontally, making sure that there are no distortions. It is important to secure the material tightly. Allowable sagging is no more than 2 cm. Horizontally, the canvases should overlap each other by 15 cm, and vertically by 20 cm.
8. So that the condensation can evaporate, ventilation holes are provided in the ridge area and in the lower part of the roof.
9. On top of the vapor barrier membrane install the sheathing.

Izospan will perform its function only if it is installed correctly. The fleecy side of the material should face the room, and the smooth side should face the insulation.

It is worth paying attention to the fact that isospan A is the most available material, but its installation due to the need to create a ventilation gap is more expensive than the cost of more durable and durable analogues.

Wall insulation:

1. For ventilated facades isospan A and AM are suitable. In cases where there is a risk of fire, material with OZD is used.
2. The membrane is attached over the insulation with the smooth side facing out. The panels are rolled out so that there is an overlap of 10 cm.
3. The isospan is secured to the building frame using staples. On top of the vapor-permeable membrane, counter-rails are fixed vertically, onto which facing material. To prevent the effect of acoustic pops from appearing during operation, there should be no loose or sagging areas along the entire length of the canvas.
4. To remove moisture, the design must provide a ventilation gap in the lower part of the casing. Izospan is laid so that the moisture accumulated under the casing flows into the drainage system.

Pace and technology modern construction imply the use of innovative solutions at all stages, including the improvement of buildings. The key is to insulate the premises from moisture and cold. For this purpose, insulating films are used, available on the market from several brands.

The optimal price-quality ratio is the Izospan vapor barrier. This material is easy to install, has high technical characteristics and attracts buyers. affordable price. Let's look at the features of Izospan class B film.

Types of Izospan products

Vapor barriers are represented on the construction market in a wide range model range. Each type has its own technical characteristics, which determine the scope of the material. The total number of insulating membranes of this brand is about 14 varieties. Let's consider 4 main categories. In particular:

Group A

The film is intended for thermal insulation of premises and protection wall structures from moisture and condensation. The material is made in the form of a double-sided membrane, one side of which serves as insulation from wind and moisture, the other removes evaporation.

In order for the film to cope with its function, it is mounted on the outside of the insulation.

Group B

One of the most popular and frequently used categories is “Izospan”. A special feature of this category of material is its absolute vapor permeability. Such characteristics are due to the structure of the insulating membrane.

One side of the film is smooth, the other has pronounced surface roughness. Smooth structure protects interior spaces from the wind, and the villi help remove moisture.

Group C

This product performs identical functions to Group B Izospan, but is more expensive. The material is based on ultra-dense polypropylene fabric, which reliably protects structural elements from any external influences.

The film is suitable for use in regions with cold climates and provides insulation of rooms even in the case of a loose fit wall panels or roofing elements.

Group D

This is a universal film that is suitable for indoor and outdoor use.

The key feature of the material is its high resistance to mechanical damage and neutrality to direct ultraviolet rays.

It is worth noting that there are “A” class films on the market. M" "A. S" "A. Q Proff.” Unlike basic prototypes, these films have a denser membrane structure (often three-layer) and are more tear-resistant. Of course, improved technical characteristics proportionally increase the cost of the material.

Characteristics of "Izospan B"

If speak about technical parameters, the following characteristics can be distinguished:

Suitable for temperature ranges from -60 to +80 degrees Celsius.

Given these features, it is not recommended to store the material in the open air in order to preserve its performance properties.

Advantages and disadvantages of this hydro-vapor barrier

Izospan insulation belongs to the category of building materials, therefore it has advantages and disadvantages. This feature is typical for any product, however, in the case of the vapor barrier of this brand, there are noticeably more advantages than disadvantages. Let's look at the strengths of the material.

The undeniable advantages include the following characteristics:

High water repellency.

Resistant to any external factors and mechanical damage.

Absolute inertness to the development of pathogenic microflora (wall mold, fungus).

Environmental Safety.

Ease of installation.

Long-term operation - at least 50 years.

Disadvantages include the high cost of some model groups and the lack of fire resistance.

Where is the material used?

This group “B” (B) is considered universal, therefore it has a rather multifaceted scope of application. The only installation limitation is internal installation. Izospan B is not suitable for external insulation; there are other groups for this. At internal insulation, the material is used to insulate the following surfaces:

Wall structures.

Internal partitions.

Interfloor ceilings.

Floors in rooms with high humidity.

Underlay for parquet or laminate.

Roof insulation.

This demand is due to the fact that the thermal insulation pie will not cope with its functions without a vapor barrier film.

Which side should I lay towards the insulation?

According to the official instructions:

For roofing. Smooth side to insulation.

For walls. Smooth side to insulation.

Attic floors. The film is placed between finishing material ceiling of the living room and the rough ceiling (smooth side to the rough ceiling).

Basement ceiling. The rough side is towards the insulation.

Instructions for use of insulating material

Despite the multifaceted use of building materials, the manufacturer imposes a number of installation requirements that must be met regardless of the scope of the material. In particular:

For vertical and inclined surfaces(roof, walls) installation is carried out from top to bottom with horizontal stripes.

The strips are laid overlapping with an overlap of at least 15 centimeters.

The joints are additionally insulated with adhesive tape.

The smooth side is always adjacent to the insulation, the rough side faces the inside of the room.

If we talk about specifics, depending on the place of application, Izospan is installed according to the following schemes.

Roof

The vapor barrier is laid directly on the rafters, between which a layer of insulation is laid. The film is fixed with clamping strips, and the sheathing and roofing material go on top. “Izospan” is fastened with a stapler so that the insulation does not fall inside; a wire is stretched from the attic side or additional sheathing is installed.

Roof covering

Izospan AQ proff, AM, AS

Counterrail

Insulation

Izospan RS, B

Rafter

Interior decoration

Lathing

Internal partitions

Interior partitions using insulation are assembled according to the following scheme:

1. Control rod.

   Vapor barrier layer.

   A layer of soundproofing material.

The vapor barrier can be fixed to the outer cladding using a galvanized profile.

Floors

Vapor barrier for floor coverings is installed according to the following scheme: between the joists there is waterproofing and insulation boards. On top there are vapor barrier strips, which are fixed to the joists with bars to provide a ventilation gap between the thermal insulation cake and the floor covering. At the final stage, the floorboards are installed.

Floors on concrete bases

Flooring

Cement strainer

Steam-waterproofing series D, RM

Floor slab

Laminate and parquet floors

Reflective heat-steam-waterproofing of the FX series

Cement strainer

Floor slab

Warm floor

Flooring

Cement strainer

Warm floor system

Reflective vapor-waterproofing class FD, FS, FX

Izospan is a membrane film used during construction to protect load-bearing surfaces from wind, moisture and steam. The material differs in characteristics and technical properties depending on the type and purpose.

Izospan insulation is made of polypropylene, resistant to mechanical stress, low and high temperatures, mold and mildew. The film is characterized by a long service life and environmental safety.

Vapor barrier isospan is used to insulate roofs, walls, and is used in elements attic floors, laid on concrete floors under a cement screed and floor covering. Films are divided into 4 groups - A, B, C, D, each of them is used for a different purpose.

The building material has an undeniable advantage - it is versatility in use and ease of installation. The vapor barrier is certified and complies with GOST of the State Construction Committee of the Russian Federation.

Moisture-proof film

Izospan, which protects structures from wind and moisture, is available in several modifications:

• Vapor-permeable isospan A - the technical characteristics of this type of material allow it to be used to protect frame walls and roofs from wind, atmospheric moisture, and condensation. WITH outside the film has a smooth, water-repellent coating. The back surface is porous and helps remove vapors from fibrous insulation materials.
• The AS isospan brand has the form of a three-layer, vapor-permeable membrane film with increased water-repellent properties.

• Izospan AF protects from wind and moisture and does not burn. This type of film is intended for use in insulating buildings made of flammable materials.
• Two-layer isospan AM has high water-repellent properties; thanks to the additional layer, the possibility of damage to the material during installation and construction work is eliminated. Recommended for installation of pitched roofs and load-bearing structural elements, insulation of attic floors. The film ensures the removal of vapors from the insulation, protects the room from weathering and accumulation of moisture from under the roof space.

The difference between films is the density of the material, tensile strength, vapor permeability and hydro-repellent properties. The most dense is isospan grades A and AF (110 g/m²). The AS film has the maximum waterproofing ability, and the AF modification has the least steam permeability.

Metallized films

Isopan with a metallized layer is designed to reflect infrared radiation; thanks to this property, not only protection from moisture and wind is achieved, but also excessive heating of the building in hot weather is eliminated.

• FD polypropylene film is used to lay a protective layer during insulation of roofs and walls. The material is highly resistant to tearing and mechanical damage.
• Isospan FX film is used as a basis for underfloor heating with infrared heating.

• Modification of isospan FS is budget option, has a lower density. At the same time, the material retains its vapor and waterproofing properties. The film is also used as an infrared screen.
• Izospan FB has high vapor resistance and is intended for insulating baths, steam rooms, saunas and other rooms with high temperatures and condensation accumulation. Buildings must have mechanical ventilation.

The difference between metallized films is in density, breaking load and vapor permeability. The thermal reflection coefficient of all types of isospan in this group is the same.

Vapor barrier films

A type of film designed to protect external and internal surfaces from steam and moisture has a laminated outer layer and a porous interior. The special structure allows condensation to collect and prevents it from evaporating. Thanks to this, moisture does not accumulate on the walls, there is no steam in the room, and the walls do not get wet.

• The vapor barrier isospan C has high protective properties and can be used for insulation of unheated rooms as a substrate for laminate flooring and insulation under the roof. The film can even prevent leaks in areas of loose installation and installation defects of the roof covering.
• According to the instructions for use, isospan B is used to protect attic roofs and insulating materials from moisture, steam, mildew and mold. The material prevents the penetration of vapors from inside the room, and also insulates the living space from the penetration of particles of insulation of the walls and roof. Suitable for vapor barrier of premises made of any building materials, installation of attic, interfloor and basement floors.

• Universal isospan D has a high density and can withstand significant mechanical loads. The film is used in any construction elements to protect roofs, walls, floors and wooden floors attic spaces. This material can be used in the construction of flat and pitched, non-insulated roofs, foundations, and basement structures.
• The DM modification includes vapor barrier, moisture resistant, anti-condensation and heat-reflecting properties. This type of isospan has a wider range of applications than grade D.

An innovative material is a variety of isospan film RS and RM. Their distinctive feature is an additional reinforced layer of polypropylene mesh. Thanks to this, the tensile strength increases and the fabric can withstand large mechanical loads.

When constructing frame walls, isospan B is used, material is laid with inside mineral wool to load-bearing elements frame using a stapler or nails. The film is fixed with the laminated side to the insulation, the panel overlaps from bottom to top with a margin of 15–20 cm. For greater tightness between each other, the material is fastened with a special isospan SL tape. Galvanized profiles are mounted on top to strengthen the drywall with a ventilation gap of 4–5 cm.

For the construction of non-insulated pitched roofs, isospan D is used, which provides water vapor barrier to structures. The material is laid on wooden roof rafters It doesn’t matter which side to lay the film on. The panel is fixed starting from the bottom of the pitched roof, in a horizontal direction, with an overlap at the joints of 15–20 cm or more. It is recommended to glue the seams with double-sided connecting tape of the KL or SL brand. The vapor barrier is fixed to the rafters with a construction stapler. A boardwalk is mounted on top for further laying of roofing material.

Instructions for using isospan B during the construction of a pitched insulated roof: the film is strengthened on the inside of the insulation on wooden rafters. The smooth side should fit snugly against insulation material, the rough surface remains at the bottom. Installation is carried out from the bottom up, using a horizontal laying method. The panels are fixed with an overlap with a margin of at least 15 cm at the joints. Double-sided adhesive tape provides additional tightness at the seams. In places where isospan comes into contact with metal, concrete and other surfaces, the surfaces are glued with ML proff single-sided tape.

For the installation of attic floors, vapor-permeable hydro-, windproof film AM or AS. The membrane is laid on top of the insulation with the light side inward and secured with a stapler. The overlap of the panels should be at least 15–20 cm. Counter slats and flooring are laid on top of the isospan.

Izospan is universal building material, which can be used to protect walls, roofs and floors from moisture, wind, internal steam and condensation. The films are highly wear-resistant and for a long time operation.