Any building under construction now, or already built, industrial or residential, is literally surrounded by heat-insulating materials on all sides. They create comfort in the room, save heat, reduce the influence of atmospheric phenomena such as rain, snow, wind, etc.

But, as it turned out, this reliable thermal insulation layer, which protects buildings, itself requires protection from both moisture and wind. And such protection is a modern material, one hundred percent polypropylene, which is called isospan A, B, C, D, the instructions for use for which we will consider.

Creating a barrier for an existing barrier is the main purpose of Isospan. Let's take a look at the general specifications new isospan heat insulator, let's see photos and videos, talk about its types and methods of installing different types of material, and which side to put it on to the insulation.

Izospan: technical characteristics

- highest strength
- good elasticity
- environmental safety (isospan does not emit harmful substances)
- ability to withstand high pressure

To the above, it can also be added that some types of isospan have fire-fighting properties, if special refractory particles were added to them at the production stage. All types of isospan resist well ultraviolet rays and can withstand ambient temperatures from -60 to + 80 degrees.

Taking into account the fact that isospan has been developed in several forms, let us touch on in detail the characteristics of the main modifications of the insulator: these are types A, B, C and D. This is necessary to know if you intend to use isospan in the construction or insulation of buildings.

Roof covering with isospan

Izospan A- This is a kind of membrane that protects the structure from moisture (waterproofing), and helps to remove water vapor from the insulation. It is used to protect walls and facades of premises for any purpose. With its protective properties, it extends the service life of the insulation. It can be safely called wind and waterproofing protection for your home.

Material tensile strength: 190/140 mm (long / cross)
UV stability: 3-4 months
Water resistance: 300 mm
Water vapor permeability: not less than 2000

Izospan type A reliably provides thermal insulation of the insulation and has:

- good resistance to external mechanical stress
- resistance to harmful substances (chemistry, bacteria)

When installing isospan, the following question often arises: which side to the insulation to lay it?

Izospan A is mounted from the outside of the insulation. When installed on an insulated roof, it is cut into wide strips and overlapped so that the smooth surface remains outside.

Installation starts from the bottom of the roof. When working with Isospan A, do not allow it to come into contact with itself, since the waterproofing properties of Isospan are greatly reduced with such direct contact.

Make sure that during the installation of this type of isospan there are no different kinds of swelling or sagging, because in gusts of wind, it will create popping, banging and other unpleasant noises in the room. Isospan A is fastened with rails with nails. A free space of 5 cm is left between the sides of the insulator. We are watching a video about izospan: which side to lay on the insulation.

If Isospan A is used as a wind and hydro-barrier for insulation, then isospan B you can call it a vapor barrier. Any insulation, even the most modern, is saturated with water vapor over time. The task of Isospan B is to create a barrier to these vapors inside the building.

The material has 2 layers and is used to preserve the surface:

- sloped roof
- internal walls
— frame walls
- attic, basement floors

Isospan B properties:

- breaking load prod. / Trans. N / 5 cm not less than 130/107
- vapor permeability about 7
- water resistance 1000 mm water column

Since isospan B consists of two layers, each side has its own functions. Its smooth part provides the adhesion strength of the insulator to the main insulation layer. The rough or fluffy side helps to retain moisture particles and drain condensation.

Izospan B fits with inside thermal insulation layer when using a stapler. Installation is carried out in the direction of the bottom-up, overlapping, while ensuring a tight contact of materials. On the side with a fleecy surface, create a free space of at least 50 mm.

Izospan B

Izospan S has very similar characteristics to isospan B, they are similar in structure, they also have a structure of 2 layers, but isospan C is more durable, heavy-duty, used to protect the floor, floor slabs, cold roof... Extra strength and special reliability of this type also determine its price, which is higher than the price of Isospane V.

Isospan C properties:

- made of 100% polypropylene
- breaking load 197/119 prod. / Trans. N / 5cm
- resistance to vapor permeation - 7 m2hPa / mh
- water resistance - 1000 mm water column

Isospan C use:

1. Water and vapor barrier of non-insulated sloped roof
2. Flat roof
3. Water and vapor barrier of frame walls
4. Vapor barrier of horizontal type wooden floors
5. Steam and moisture insulation of concrete floor

On pitched roof surfaces, it is installed horizontally, with an overlap (15 cm), the work takes place from the bottom up. A special tape is applied to the formed joints. Fasteners are made using rails.

When working with ceilings, Isospan C is placed on top, overlapping, leaving a small gap of 50 mm from the film, heat insulator and floor. When working with concrete floors, this type of isospan is mounted directly on concrete surface, and a screed is carried out on top.

Roof waterproofing with isospan

Izospan D is a modern high-strength vapor and waterproofing material. This type of isospan can be called a polypropylene woven fabric having a two-layer structure.

A feature of Isospan D is that, in comparison with other types of polypropylene materials, it has the ability to withstand very significant mechanical stress during installation, and is also able to withstand a large snow load.

Scope of isospan D

It is used in construction as a waterproofing and vapor barrier for under-roofing, in non-insulated pitched roofs, as well as for protection various designs made of wood. Serves as a reliable barrier on the way of under-roof condensate, as well as atmospheric phenomena in the form of snow, wind, especially in those places where the roof is not laid tightly enough.

Izospan D is used to form a temporary coating layer for waterproofing the roof and walls of buildings (up to 4 months). Also, this type of isospan has proven itself well as a waterproofing layer when working with floors on a concrete and earthen base, and when insulating basement floors in buildings with high humidity.

Used for insulation:

- flat roof
- floors on concrete base
- basement floors
- sloped roofs

Izospan D

Physical and mechanical properties of Isospan D:

- breaking load prod. / Trans. N / 5cm: 1068/890
- resistance to vapor permeability m2hPa / mh: not less than 7
- water resistance: 1000 mm water column
- UV resistance: 3-4 months.

Izospan D finds its application in works, in order to preserve internal parts houses and insulation from the influence of water vapor accumulating inside the room. It should be noted that the installation of Isospan D, like other types of Isospan, is easy enough, which in itself provides a good, constantly growing demand for this modern insulating material.

When laying Isospan D on an uninsulated roof of an inclined shape, the material is cut directly on the rafters. It does not matter which side of the insulator is mounted to the surface. Isospan D canvases are laid horizontally, with an overlap.

Work starts at the bottom of the roof and continues upward. The joints formed during the laying of the material are connected with a special adhesive tape. The stretched, ready-to-use material is fastened vertically to the rafters with wooden slats and studs.

As you can see, with very good characteristics, modern insulating material isospan it is quite simple to use and does not require any special skills and knowledge when installing it. But the functions that Izospan undertakes will ensure the reliability and durability of your entire thermal insulation system. Watching the video.

One of the protective layers used in the insulation process is vapor barrier. It implies the presence of good protection of buildings and structures from the effects of condensation and a humid environment. Such layers provide a longer service life for buildings in general and personal elements in particular. Izospan A is widely used for similar purposes, the technical characteristics of which allow for maximum protection.

Many manufacturers are engaged in the production of similar products in the form of a quickly mounted membrane film and all kinds of multilayer sheets covering walls, ceilings, ceilings, and roofs. The methodology for using the tools may differ slightly depending on the operational parameters of the product.

Diaphragm specifications

The manufacturer's membrane material is marked by the manufacturer in such a way that each type of Izospan is used exclusively for its intended purpose. At the same time, the entire range of products is designed to protect structures from precipitation, wind and condensation formed inside the premises.

The production of nonwoven fabric is carried out on CNC machines with mandatory quality control at each stage of production.

The branded membrane has a number of certificates and certificates:

• hygiene certificate;
• fire certificate;
• certificate of compliance with SNiP and GOST;
• quality control certificate.

Insulation Izospan today has no analogues among Russian manufacturers in terms of scope and quality, which is confirmed by the GOSTSTROY certificate.

Product range

There are such varieties on sale:

It is a permeable membrane that is used to protect the walls of the room and the roof from condensate formed due to temperature drops. The resulting evaporation of liquid among several layers complements the durability of the covered materials. In the roof, such Izospan exhibits positive characteristics with a slope of the beams of no more than 40 degrees. Roll price 35 sq.m. RUB 766

Presented in the form of a two-layer vapor barrier sheet, used exclusively inside buildings and structures. A brand of this density is capable of effectively protecting attic space or attic, and is also in demand for the roof, all kinds of basement levels, walls and in the form of an additional insulating layer. The layers are of high density. Roll price 70 sq.m. 1087 RUB

The scope of application of this non-woven fabric is non-insulated roofs, it is a two-layer membrane. The characteristics of the formations are vapor and waterproofing. Application for attics is allowed. 1649 RUB 70 sq.m.

The technical characteristics of the material are very versatile, it can be used in different areas... Suitable not only for hydro-, but also for vapor barrier of floors between floors, concrete foundations, roofs that are not insulated, for finishing foundations. 35 sq.m. costs 535 rubles.

Unlike Izospan A, the technical characteristics are higher, since the membrane film of the special material is highly durable. The structure contains materials that increase protection against all kinds of mechanical damage. Laying is carried out directly on top of the heat insulator, which helps to protect against weathering and condensation droplets. Roll price 70 sq.m. 2323 RUB

Endowed with special characteristics. One of the layers is kraft paper, which is metallized on one side with a material such as lavsan. This ensures both steam and waterproofing of Izospan. For such qualities, the structure is in demand for flooring on pitched roofs... It is also used to create thermo-constant humid conditions for baths and saunas. Although this texture has a rather high price tag in comparison with analogues, it can be absolutely indispensable for certain purposes.

Nonwoven fabric is made from kraft paper with subsequent coating with metallized lavsan. Due to this processing, the material can withstand temperatures in the range of -60 ° ... + 120 ° C and is used for heat and vapor insulation of walls, floors and ceilings in steam rooms, baths, saunas, hamams and other similar rooms. 1056 RUB costs 35 sq.m. films.

This variety is made from a polypropylene film and a metallized layer of lavsan is also applied. In the FD variation, a vapor barrier film D is used as a base, and in FS - B. And although the strength of the canvas is beyond doubt, it is recommended to use it for vapor barrier of structural elements from the inside, including for steam rooms, mansard and attic floors and also as a heat-reflecting screen in steam rooms. 1987 rub. roll 70 sq.m.

Foamed polyethylene, covered with a metallized layer, acts as a base layer. Due to the abundance of air bubbles, isospan is used as sound insulation, as well as as a heat-reflecting screen, for which lavsan is responsible. Compared to other options, this canvas has the greatest number of advantages, but due to the fact that it is based on foamed polyethylene, the maximum operating temperature does not exceed 90 °. It cannot be used for finishing walls, floors and ceilings in rooms with high temperatures.

It is much more effective to use FX as a substrate for installing underfloor heating, for decorating walls behind radiators to reflect heat and as insulation in living quarters in combination with finishing materials.

The FX has a zero vapor permeability threshold, so its use is prohibited in this segment. Cloth 2 mm thick with an area of ​​36 sq. M. will cost 1566 rubles.

VIDEO: Application of vapor barrier membranes

Installation instructions

In the process, some preparation will be required. You will need to stock up on a set of tools and materials. You will need wooden slats, and self-tapping screws for them. The workpieces are cut with well-sharpened scissors. The joints are hidden with tape, and for fixing it is used construction stapler.

A metal profile is involved in the calculations. The required area is calculated taking into account the overlap on both sides. Usually 15-17 cm are allotted for this.

The material "Izospan A" is not intended for use as the main roofing covering

Izospan of the required brand is used according to a specific algorithm based on important rules:

• All fasteners are recommended to be carried out exclusively from the side of the room. You can work with sheets at a temperature not lower than -25 ° C. It is allowed to roll out the protection both from the outside and from the inside. If you need to work with the roof, then only the inner layer of the "pie" is in demand.

• The vapor barrier is fixed construction stapler along the perimeter of the walls. Subsequent sheets are superimposed on the previous ones by 150 mm, while the seam is glued with tape. Material tension is not allowed, slight sagging is provided. The finishing operation can be the final drawing of the sheets. wooden slats to walls, roofs or rafters.
• For the laths to be placed, you should choose a step from an interval of 30-50 cm. After punching them over the entire area, you can fasten the selected Izospan over the top. The formed ventilation pocket ensures rapid evaporation of excess moisture.
• The vapor barrier sheets can be attached to a specially designed frame on the walls of the room. For the base, metal / wooden slats are used, fixed to the walls with self-tapping screws. All joints must be glued with tape.
• The ventilated insulated facade is treated twice with similar protection. The first crust is placed behind a layer of insulation, the second crust is placed in front of the insulation. Accordingly, a three-level thermal and vapor barrier system with a high degree of efficiency is formed.

It should be borne in mind that for reinforced concrete structures, the use of a vapor barrier is mandatory for both walls and floors / ceilings.

Features of using a popular brand

Due to its individual properties, each material is in demand in various operating conditions. Should rely on physical characteristics them in order to choose the right coverage.

A special feature of the A-grade material is its high tensile strength. The outer side of it has a smooth structure that is not able to absorb or pass water. Inner surface is with a rough anti-condensation texture. Drops are easily held on it and then evaporate into space.

The main task of the material is high-quality protection of the insulation and the entire structure from the ingress of condensate from the outside. At the heart of the "A" brand, modern polymer structures are used.

The main advantages over analogues are:

• excellent mechanical strength;
• a high degree of environmental friendliness, since no harmful substances are emitted into the atmosphere;
• for a long period does not lose its high characteristics;
• withstands the impact chemical substances neutral to bacteria.

Due to its resistance to ultraviolet light, it is actively used in the treatment of roofs, attics, plinths. The density is reached 110 g / cm3. Usually sold in rolls of fifty meters, which are 140 cm wide.

It should be borne in mind that grade "A" is usually laid as the main material, in contrast to "C" or "D", which are recommended by the manufacturer for use in temporary protective structures.

For ventilated facades multi-storey building Izospan A is placed on top of the insulation so that the smooth side remains outside, and a ventilated gap is provided inside. It is necessary to ensure maximum adherence to the insulation and did not have unsecured areas. V otherwise acoustic popping will be generated due to increased wind loads. The cloths must ensure the drainage of excess moisture.

VIDEO: Installation example

Moisture and vapor barrier device - very important stage construction. One of the best materials used for this purpose is isospan. It belongs to the category of relatively new products used in the protection of structures. The manufacturer provides a wide range of insulating films that differ in purpose.

You will learn everything about the range of membrane films labeled as isospan A, B, C, D from our article. We have described in detail the popular insulating materials, given their technical characteristics. Independent DIYers will find installation manuals and useful tips.

For the most part, isospan is produced in the form of a membrane or film. Both versions have a vapor barrier function. There are types that are 100% waterproof and unilaterally permeable to moisture. If we consider the types of this material separately, then each is intended for separate tasks.

The term isospan hides four broad groups - A, B, C, D. They stand out for their individual design features.

Isospan is used in the device, installation of cold roofs, construction of baths, as an insulator for enclosing structures. The material is especially effective as protection of insulation systems and wooden elements from putrefactive processes, and metal ones from corrosion.

There is isospan used inside buildings, and other varieties are intended for outdoor use. Isospan is also available universal application... In any case, its use makes it possible to significantly prolong the operation time of the insulation, which, under the influence of moisture, quickly loses its properties.

There are three main groups of isospan: moisture- and windproof, steam- and moisture-proof, vapor-proof. Materials included in the second group are used for interior finishing works

Vapor-proof isospan is used for both indoor and outdoor work. According to the functionality of the material, it is divided into classes.

Insulation material group A

The material marked with the letter "A" belongs to the first group. It is characterized by high density, therefore it is indispensable for warming attics, walls, roofs. Fungi and mold do not develop on it.

This diffusion membrane holds water, but steam passes through it unhindered. For manufacturing, polypropylene is used. It strengthens and protects thermal insulation from the influence of outdoor atmospheric moisture or cold air from the side of a room that is not heated.

Izospan A is an excellent wind barrier for ventilated facades. It neutralizes the consequences caused by the onslaught of side winds that favor the escape of heated air from the heat-insulating layer.

In order for Izospan A to fully reveal its capabilities, it is necessary to follow the technology exactly during installation. Since the air jets pass through it only unilaterally, in no case should the sides be confused. Otherwise, the insulating layer will get wet due to the accumulation of moisture in it.

Isospan A is produced in rolls with a width of 1.6 m. The area of ​​the material in a reel is 35.7 m². Optimum temperature limits for operation are -60 - 80⁰. For three, or even four months, the membrane can be influenced by ultraviolet radiation without loss of characteristics. Subsequently, these aggressive rays will gradually reduce the UV stability of the material.

Izospan marked with the letter A may contain fire retardant additives. Then, to all its characteristics, one more is added - protection against fire. This brand belongs to the G1 flammability group, and according to the flame propagation rate - to the RP1 group.

The material can withstand quite high breaking forces - from 125 longitudinal and from 95 N / 5 cm transverse. This is facilitated by special additives that strengthen the structure of the material.

The vapor permeability of the material is at least 3500 g / m² day. Water resistance parameter - 330 - mm. water Art. Based on these characteristics, Isospan A is advisable to use when installing ventilated facades, frame enclosing structures, roofs with double lathing and slopes at an angle of 35⁰.

The 3-layer AS membrane well insulates both wall and roof structures from street moisture and steam. The presence of such a barrier guarantees the safety of the insulation

In contrast to the A-group membrane, the AM film has a two-layer structure. She also found application to protect insulation, roofing elements from condensation, weathering.

These types of insulation have a number of differences:

1. AS- the most durable, in addition, stands out for a rather significant service life, but the steam transmission rate is only 1000 g / m² per day.
2. A- the best view in terms of steam permeability.
3. AD- a strong membrane with a vapor permeability of 1500 g / m² per day.

There are differences in terms of installation. If grade A is selected, an air gap is required, otherwise the steam will be discharged ineffectively. Membranes AS, AD are mounted directly on the insulation.

The second group marked B

This vapor barrier has a slightly lower price.

The technical parameters of Isospan B are as follows:

• composition - polypropylene;
• application temperatures - -60 - 80⁰;
• water resistance - 1000 mm of water. With t. Minimum;
• UV resistance - 3 - 4 months;
• minimum vapor permeability - 7 gr. per m² per day;
• The structure is two-layer.

It is used as a subroofing film in frame enclosing structures, in interior partitions. On the one hand, it is smooth, the opposite side is rough, it is on it that moisture is retained and it evaporates.

With its help, the building is insured against penetration inside, walls, systems in a private house.

Isospan grade B is laid so that the rough side is on top. It is a high-quality steam and waterproofing for rooms with traditionally high humidity - bathrooms, toilets, showers, basements

The price of this brand is the most democratic. Unlike grade A, this material is not attached on top of the insulation, but on its bottom side. Do it from the bottom up, then overlap. For better capture of water vapor, a 5 cm gap above the rough layer is required.

Features of the material of group C

In terms of resistance to vapor permeability, water resistance, UV stability, this type of insulation does not differ from the previous material. Isospan brand C has the same temperature range: (-60) - (80⁰). The difference in breaking load, here it is greater - longitudinal minimum 197, transverse - 119 N / 5 cm.

The two-layer film is particularly durable. Polymer membranes of group C are used for waterproofing and vapor barrier for protection, attics, roofs with a slope of maximum 35⁰.

They are used as a waterproofing substrate for metal tiles, as it perfectly protects rafter system from rain and melt water. In addition, it is a good waterproofing for substrates. different types... The material is also used in the case of concrete floors in places of high humidity.

Description of brand D products

A distinctive feature of Isospan D is its good UV resistance. Tensile strength is also high - longitudinal breaking load - not less than 1068 N / 5 cm, 890 - transverse.

Due to its high strength, grade D polypropylene fabric can withstand considerable mechanical forces during installation and operation, including the weight of snow. For this reason, it is quite suitable as a non-permanent roof that functions normally for about 4 months.

The material also proved to be good in the role of under-roof waterproofing in cold roofs. He saves wooden elements from the destructive influence of moisture penetrating from the outside, as well as wind, snow, which may appear there through leaks in the roof. It is also an effective waterproofing layer in basement ceilings.

Installation instructions for isospan

Steam, moisture and wind protection of a building is a complex event. Using glassine or plastic film ineffective. Izospan is specially designed for this purpose and its high qualities have been tested in practice.

For installation, in addition to Isospan itself, a stock of tools and fasteners is required:

• special scissors;
• self-tapping screws;
• construction stapler;
• connecting tape;
• metal profile or wooden slats.

It should be remembered that the membrane is attached to the walls both from the inside of the room and from the outside, and on the roof - only from the inside. The features of a particular type of isospan are reflected in the instructions for use of the material.

Mounting the diaphragm of group A

The best application of this thermal insulation, waterproofing, windproof membrane is to protect the frame wall of low-rise buildings from moisture and wind. It is mounted on the outside of the insulation layer under the outer finishing of the building.

Outer side Isospana A does not allow moisture and wind to affect the state of the insulation. Internal - prevents the formation of condensation, because has the ability to remove steam

Isospan A is laid in accordance with its technical characteristics on top of the insulation along a special frame.

The technology is simple and does not require special qualifications:

1. The roll is unrolled and cut into panels of the required size.
2. Sections of the membrane are alternately placed on the frame horizontally with an overlap with the straight side outward, starting from the bottom, and moving upward.
3. Attach the protection to the frame with an overlap using a construction stapler or other method. The minimum overlap both horizontally and vertically is 100 mm.
4. The material is additionally strengthened. To do this, the stretched panels are pinned to the rafters with a construction stapler.
5. To seal the overlap, the joints of the panels are fastened with 2-sided Isospan KL tape.
6. Self-adhesive tape is laid in the area of ​​attachment.
7. On top of the isospan layer, wooden counter-rails are attached vertically to the frame. They are pre-treated with an antiseptic. The size of the slats is 40 x 50 mm. They fulfill the role supporting structure for external cladding - in the form of lining, siding, etc.

A prerequisite is a ventilation gap equal to the thickness of the counter batten between the isospan layer and the outer skin. The bottom edge of the membrane is positioned so as to divert the dripping moisture into the drain of the building's basement.

Laying the film Am and As in the insulated pitched roof

The material protects the supporting structure and insulation from condensation collecting under the roof, as well as from snow, wind, moisture that enter through loose laying of the coating

The membrane is laid without a ventilation gap, so there is no need to arrange an additional crate between the insulation layer and isospan. Fasten it taut.

The sequence of operations is as follows:

1. The roll is rolled out and cut directly on top of the insulation.
2. The panels are laid out horizontally, turning the white side to the insulation. Start of installation - the lower part of the roof. The segments overlap horizontally and vertically by at least 15 cm.
3. Strengthen the membrane along the rafters with a stapler.
4. The joints are fastened with solid 2-sided tape isospan KL.
5. The traces of fastening with nails or self-tapping screws are closed - they are glued with a self-adhesive strip along the rafter legs and other elements. This is especially true for roofs with a slight slope - up to 22⁰.
6. Wooden antiseptic slats 4 x 5 cm are vertically fastened on top of the tape along the rafters.
7. The crate is mounted on the counter-rails. Based on the type of roof, it can also be a continuous flooring.

To eliminate under-roof condensation between the front side of the film and the roof covering, a condensation gap is arranged using slats about 50 mm thick.

For free air movement in the space under the roof, the bottom of the roof and the ridge area are supplemented with ventilation holes. Moisture from the membrane surface flows into the drain along the lower edge of the membrane

When installing isospan along the crate, a slight sagging is allowed. A membrane without insulation is practically useless.

Application of insulating material B

This type of membrane perfectly performs the function of a vapor barrier, which protects the insulation layer from water vapor rushing upward from the side of the room, and also protects the space of the rooms from the ingress of insulation particles.

Mount it from the side of the insulation, directed inside the room. Installation is carried out using a construction stapler on rafters or rough sheathing. Sometimes galvanized nails are used for this purpose. Correctly, when the flat side is closely adjacent to the insulation.

Work starts from the bottom. The vertical and horizontal overlap is the same as when installing other types of isospan - from 150 to 200 mm.

As in the case of Isospan Am, the joints are glued with Izospan KL, SL strapping tape. The contact points of the material with structures made of any material are sealed by using a one-sided Isospan adhesive strip ML proff.

If the room is finished with clapboard, the vapor barrier is fixed using wooden slats impregnated with a septic tank 4 x 5 cm.For plasterboard sheathing - galvanized profiles

The interior trim is fixed to the wooden base with a ventilation gap of about 40 mm. In the case of using Isospan as a vapor barrier for a frame wall, it is fixed from the inside of the insulation to the loaded frame parts or to the rough sheathing.

A stapler is used as a tool, although the use of galvanized nails is also possible. It is laid on the insulation with the flat side to it. When decorating walls with plasterboard, galvanized profiles are used, clapboard - wooden counter-rails.

Izospan, as a vapor barrier for the attic floor, is placed in the gap between the finishing material of the ceiling - the rough ceiling. A smooth surface is turned to the latter. In this case, the ventilation gap is also mandatory.

The vapor-permeable membrane of grade B is also a good hydro-vapor barrier for interfloor floors. Installed between the ceiling trim and the draft system. The rough side is turned down. Fastened over the beams with an overlap.

Between the insulation layer and the final vapor barrier layer, between the finishing floor and the vapor barrier layer, between the finishing ceiling material and the bottom Isospan B layer, arrange a ventilation gap.

The bottom of the basement floor must be protected with a layer of vapor-waterproofing. This must be done so that moisture does not penetrate from the ground to the insulation and other structural elements. The recommended type of isospan for this purpose is D.

The best option for using brand D

Isospan type D for cold pitched roof is an excellent hydro-vapor barrier. By using it, they protect the elements and structures of the attic room, made of wood, from under-roof condensation, snow, wind, atmospheric moisture.

Starting the installation of a protective barrier for a cold pitched roof, Isospan D is spread, cut out. All this is done right on the roof rafters. The advantage of the material is that it does not matter which side to attach this isospan, which is very convenient.

Horizontal sections are overlapped, traditionally starting from the bottom of the roof structure.

Conclusions and useful video on the topic

Video # 1. How to properly lay the vapor barrier in the house:

Video # 2. The sequence of work when arranging the interfloor and ceiling overlap:

Video # 3. Demonstration of the installation process vapor barrier film For protection roofing cake from household steam:

Laying hydro and vapor barriers is an extremely simple process, but the protection they provide to structures is very effective. Protection against atmospheric water and household vapors - a guarantee of a long service life of materials used in construction.

The key point when choosing a certain type of protection is the specific place and circumstances of its installation. In this regard, when purchasing material, you need to carefully study the permissible options for its use.

Tell us about how you used Izospan insulating films in arranging an attic at your own dacha or in a country house. Share useful information on the topic of the article that may be useful to site visitors. Please leave comments, post photos, ask questions in the block below.

Izospan is a film-type insulating material. It ensures the preservation of the original qualities of thermal insulation and is used in a wide variety of areas. Therefore, it is worth considering in detail its advantages and disadvantages, as well as learning how to properly mount the material on the walls, roof, foundation. This and much more will be discussed below.

Types and their properties

Thermal insulation retains heat in the house when it is cold, adds comfort in the heat, and prevents the rooms from being blown out. However, the insulating material itself needs protection from negative atmospheric phenomena. Such protection is provided by a polypropylene membrane - Izospan.

Such a sheet 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.

The film complies with the construction GOST and has the following generalized qualities, which are confirmed by the manufacturer:

• thermal conductivity;
• density;
• waterproofness;
• elasticity;
• resistance to negative influences;
• resistance to ultraviolet light;
• environmental Safety;
• Fire safety.

Izospan's properties correspond to the product classification. Classification is the letter indices used by manufacturers to designate the material being produced. Sometimes on sold samples you can see a combination of letter indices. Each new designation expands the possibilities of using the material. The performance characteristics of any Izospan are high.

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

In the production of Izospan, polypropylene is used. The base is remelted, and then rolled to a certain thickness with special shafts. The material is obtained with a homogeneous structure, dense. The material is considered two-sided, and both surfaces of Izospan perform different functions.

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

Today Izospan is recognized as effective material insulation of attics, garages, walls of private houses.

The properties of the material will protect the metal coating from corrosion, and the wood from decay. The material prevents the penetration of air currents, does 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, neutral to mold and mildew. The film is stretched longitudinally by 19 cm, and across by 14 cm. The material is used as an additional barrier, fixed to the outer side of the insulation. For fastening the membrane, wooden slats and nails are used.

• Izospan V- an excellent vapor barrier that will exclude high humidity inside the room. Two-layer Izospan B can be used on roofs, internal and external walls, on attic floors. The material is stretched longitudinally by 13 cm, and across by 10.7 cm. Unlike the previous modification, Izospan B is installed inside the insulation, overlapped, taking into account the presence of free space between the layers.
• Izospan S- two-layer, known as a good protection for roofs, frame walls and concrete floors. The membrane is fixed to the insulation, with an overlap, with wooden slats. For insulation, the floor is laid directly on the surface.
• Izospan D- very durable, known as roof protection in terms of waterproofing. In addition to roofs, Izospan D is covered with concrete floors at the level of basement floors. The material is mounted in horizontal strips, fixed with wooden slats. In addition to the main modifications, there are additional varieties of Izospan, the purpose of which should be considered in more detail.

The 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 ribbon SL fix the strips of hydro- and vapor barrier between themselves, the better impermeability of the connecting seams will be ensured. 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 both 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 ML characterized by high-quality adhesion. Proff modification material has shown itself in especially difficult cases, as it helps in connecting uneven surfaces, different reasons eg bricks with concrete, porous surfaces. Izospan ML allows you to glue together plywood, wood and plaster surfaces. The material provides a better abutment of pipes, windows to window openings.
• Izospan KL allows you to glue together two panels. Good sealing of material overlap points. Izospan KL is glued to the upper edge of the insulated panel, paper side up. It is pressed to the lower canvas 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 canvases at positive ambient temperatures. The basis of the adhesive layer is water-dispersion modified acrylic. Izospan KL does not contain solvents.

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

The works associated with the installation of the membrane are simple and do not require special qualifications.

• Regardless of the place of installation, the smooth surface of the film must always face the thermal insulation. Incorrectly laid canvases will not add effectiveness to insulation, the structure will not receive a vapor barrier effect. Each type of product is accompanied by instructions. Its exact observance will not allow making mistakes in work.

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

General form the system will be as follows:

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

Vapor barrier of the internal partitions of the house is needed if the interior ceilings are frame.

In this case, Izospan B can be installed on either side of the wall. For work, a stapler or special nails are used. 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 logs, above the insulating layer, then the smooth surface must be laid up. Clearances are required:

1. Between the insulation layer and the vapor barrier layer.
2. Between the flooring and the vapor barrier.
3. Between the ceiling trim and Izospan.

General form:

• ceiling decoration;
• 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 analyze in more detail technical merits and disadvantages, as well as consumer reviews.

Advantages and disadvantages

The main advantages of the material:

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

Izospan perfectly weathers the accumulating condensate, significantly improving the characteristics of the insulation. The walls remain dry, so mold and mildew does not appear on them.

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

There are other disadvantages as well:

• 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 the concrete surface of the basement, it is recommended to warm up the latter with heat guns.

Consumer reviews of the material are generally positive.

• For example, users write about the qualities of Izospan S that work with him can be carried out simultaneously with the laying of the cake. The material allows you to save on the installation of the lathing. The thermal insulation has been in good condition in two years. No heat loss, no wet spots.

• Another user notes characteristics of Izospan AS... Of the advantages, the high speed of installation is noted. 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, as they are both smooth.
• In contrast, variant of the FB series easier to define. Users report good roughness on the correct reflective side. However, the material is expensive, since its width is non-standard. Investments pay off in further exploitation.
• Izospan B sides are also easy to spot. The smooth side of the material must be mounted to the insulation. The vapor permeability of the material is at a height, the cost is justified.

Features of use

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

FB series vapor barrier used in interfloor wooden floors, for walls inside a steam room, saunas. The FB series is based on kraft paper and metallized lavsan. Features of structured Izospan allow you to effectively reflect thermal energy... It is not necessary to mount the FB series outside, as the material perfectly resists the temperature environment with dry steam up to 140 degrees.

The material has excellent strength characteristics and is environmentally friendly.

The use of Izospan allows to reduce heat losses in the steam room. The same vapor barrier will prevent dampness inside the wall structure.

Dimensions of Izospan FB roll:

• 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 correspond to GOST. Performance may be degraded by UV radiation.

Materials of the series FD, FS, FX have similar characteristics. These are vapor-permeable membranes that prevent the weathering of water vapor into the atmosphere. The materials are waterproof, waterproof, and have an energy-saving effect. The materials are capable of reflecting infrared thermal radiation and protect the floors from steam. The use of steam and moisture insulation allows to reduce the period of heating the room, gives significant savings on heating the room.

Izospan AS series it is, at the same time, waterproofing, vapor barrier, interoperability. The membrane has three layers, it protects from wind gusts, moisture from the external environment, insulation, roof elements, walls. Izospan AS series can be mounted on a heater without a ventilation gap. As a result of the application of a series, expenses on the crate between the insulation and Izospan are excluded.

The membrane is diffusion, has shown good water resistance and water resistance. 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, 70 m long. The effects of UV radiation, as in the previous version, reduce the quality characteristics of the material. Initial technical qualities are in accordance 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, for ventilated facades, a film of the A series with OZD can be used. This vapor-permeable membrane will protect the facade elements from wind and precipitation. The film will not allow the removal of vapors from any type of insulation material. Film width 1.6 m, roll length 70 m.

Separately, as a roof vapor barrier, the material of the RS series can be used. The film is suitable for non-insulated structures. It will protect wooden elements from condensation and penetrating atmospheric agents. As a vapor barrier suitable for flat roof structures.

Another type of film that is suitable for non-insulated roofs is Izospan RM. Three-layer material with reinforced mesh made of polypropylene. In addition to protecting roof structures, it can be used to protect genital concrete slabs... In this case, it participates as a waterproofing layer.

Which to choose?

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

• temperature phenomena at the location of the building;
• the purpose of the roof (operated, unexploited);
• roofing cake construction.

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

If a vapor barrier is chosen for a bath, it is advisable to minimize the possibility of fire, therefore FD, FX, FL Termo, foil vapor barrier are the most suitable options for similar designs.

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

Unlike roofing material and glassine, Izospan is a modern new generation material. Diffusion film has lower vapor permeability values ​​in comparison with the membrane considered 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 analogs have advantages and disadvantages. For example, types such as roofing felt and glassine, have a low cost. However, today few people will use roofing material for vapor barrier of the roof of a residential building. This is a material for household purposes. Glassine is also not used as the main hydro and vapor barrier.

The utilization rate of bituminous membranes is also low. With the help of this material, concrete roofs are vaporized. This type is mounted by heating and then gluing to the base. The main drawback of the material is its heavy weight.

Almost all of the above types of materials are combined by Izospan, which is presented on the market in 14 varieties. Only A class Izospan combines several options for films, for example, AS, AM, with different strength, density and steam transmission ability.

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

Length, thickness, weight, number of meters per roll varies depending on the class of material. The division looks like this.

First grade

Izospan A

• width, m - 1.6
• size, m² - 35, 70

Second class

Izospan V

• 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 performance of various manufacturers is generally the same. Let's talk in more detail about the most famous suppliers of this building material and user reviews.

Famous manufacturers and reviews

Positive reviews are obtained by the following manufacturers of vapor barrier films that can be installed from inside the premises:

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

Famous manufacturers hydro-vapor barrier, which are also characterized by positive side and became widespread as a temporary roof:

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. 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 the Italian reflective films.

Laying method

1. It is necessary to lay any vapor barrier on any type of roof after installing 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 the same points of contact, the material must be carefully fixed.
4. In places of contact with water pipes which can pass through the roof, the membrane is rolled down, wrapped around the pipes and carefully taped.
5. Some types of materials require a mandatory air gap. Thin wood planks are sufficient to create this space. They are located at a distance of about 50 cm from each other.

General rules installation of the film presupposes strict adherence to the instructions for use. The technology of laying on vertical and inclined surfaces should be done from top to bottom. Lay the film strips horizontally correctly. It is necessary to lay the film with an overlap of at least 15 cm. For reliability, glue the joints with adhesive tape. If the wall is finished with plasterboard, the film must be laid with the rough side to the drywall, and the smooth side to the insulation.

• When laying the vapor barrier on the roof Izospan can be fixed directly to the rafters. Bars or thin clamping strips are suitable for fixing. Finishing: plasterboard, plywood, lining, etc., mounted on top of the vapor barrier. If bars were used for fixing, then 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 wall insulation indoors, then first you need to fix the bars on the vertical. If drywall is used as a finishing cladding, then a metal frame will do. After that, a heater is mounted: mineral wool or expanded polystyrene. A vapor barrier is attached to the bars with slats or a stapler. The next step is to establish a fine finish.

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

• ​​​​​​If the vapor barrier is damaged during installation any structural elements, torn places must be repaired. For this, you can use sticky tapes or special glue. The material is very reliable in installation and is more expensive than ordinary plastic wrap. However, the quality characteristics of Izospan significantly exceed those of the film.

The following tips will help you do your job well.

1. When laying any vapor barrier materials, pay attention to the quality of the joints. If they are poorly glued, the ceiling usually sweats, and the efforts from the work done are practically reduced to zero.
2. It is easiest to close up any hole in the membrane with a special tape for gluing with a width of at least 10 cm. A narrower tape will simply come off.
3. Leave folds of material 2-3 cm wide around windows, other openings, especially if the building is new, constructed. In this case, a deformation margin must be provided for.
4. If the vapor control membrane is laid around roof windows, 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, wood, it is better to use adhesives with acrylic or rubber base.
6. Polyurethane-based adhesive tapes are not recommended for use by specialists. It is believed that due to insufficient stickiness, they move away from the base over time.

For the use of Izospan, see the following video.

Is a line of polypropylene nonwovens designed for steam and waterproofing structures.

Izospan protects structural elements and insulation from:

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

Isospan is used in structures:

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

The nonwoven fabric manufacturing technology is fully automated. But at the same time, quality control is necessarily carried out at each stage.

Izospan has a hygienic and fire certificate. Also, the products have been tested for compliance with building codes and GOSTs. As a result, a GOSTSTROY certificate was issued for it. Izospan has no analogues among similar products of domestic production.

Specifications

Isospan B, C, D, DM characteristics:

When choosing vapor barrier materials, you must pay attention to the following parameters:

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

Isospan A has the highest vapor permeability (3000gr / m2 / day), but it has the lowest water resistance index (330 mm water column), which makes it possible to use it only on roofs with an angle of inclination 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 / m2 / day, respectively, but they are favorably distinguished by a water resistance index - 1000 mm.w.st. As a result, they have become the main materials used in roof insulation.

If it is expected that the roof will remain uncovered for some period of time, it is necessary to use Isospan AQ proff. He alone has UV stability for 12 months.

Isospan D's best tensile load 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 rupture rate of only 130/170 N / 5cm. In this regard, it is necessary to involve qualified specialists in its installation and not leave the material in the open air.

Izospan C is an intermediate option.

Peculiarities

1. Polypropylene film with a smooth top and fleecy bottom. The villi are necessary to trap condensing moisture and prevent it from rolling onto Decoration Materials. Installed in front of the insulation in such structures:
   • insulated roof;
   • walls;
   • overlapping;
2. Laminated fabric with a smooth and fleecy side. Due to the increased density, the field of application of this material is expanding. It is used:
   • On unheated roofs, as moisture insulation.
   • In ceilings (including above basements and attics), as a vapor barrier.
   • In floor structures.
   • In a concrete screed, as a hydro-barrier.
3. Polypropylene fabric laminated with a film. Izospan D finds wide application as:
   • Additional moisture insulation on unheated roofs.
   • Vapor barriers for any structures requiring protection from water vapor.
   • Waterproofing layer in the screed.
   • Temporary roof.
4. Diaphragms marked A, AS, AM, AQ proff protect the insulation from getting wet, weathering and drain condensate from the roofing or wall cake into the drainage system. Benefits of using:
   • Remains of moisture trapped in the insulation layer from the room are easily removed.
   • The probability of penetration of atmospheric precipitation into the thermal insulation 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, condensate-retaining side. A membrane of this type has a low coefficient of water resistance, therefore its main purpose is to protect the insulation on the facade.
6. Izospan AS, AM, AQ proff. AS, AM are a membrane made of a vapor-permeable material and a dense, air-tight backing. Used to protect:
   • Frame-type walls.
   • Ventilated facades.
   • Insulated roof.
7. Heat-reflecting vapor barriers FB, FD, FS, FX trap in the room the smallest particles of moisture and radiant energy. Advantages of using thermal insulation reflective films:
   • Heat loss through the building envelope is reduced.
   • Heating costs are reduced.
   • Eliminates the likelihood of mold formation in wet rooms;
8. Steam barrier FB. Izospan FB is made of 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. Isospan FD uses a grade D vapor barrier film as a base layer, while FS uses grade B. Manufacturers recommend using the described vapor barrier for interior decoration:
   • steam room;
   • attics;
   • as a heat-reflecting screen;
10. This material is polyethylene foam backed up with a metallized film. Polyethylene with a layer of bubbles, is an excellent heat and sound insulator, and the metallized layer prevents heat leakage, retains steam and water. Izospan FX is the most cost-effective, safe and durable steam, noise and heat insulator. Its disadvantage is the maximum operating temperature - + 90 ° С, which makes it impossible to use it in steam rooms. It is actively used as:
    • Substrates when installing a warm floor.
    • Reflective screen for.
    • Insulation for mansard roofs in tandem with classic materials.

Use of reflective films to insulate walls and ceilings is possible 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. Wide range of.
3. Affordable price.
4. Reliability and durability.
5. Persistence to the formation of mold.

Disadvantages:

1. Low durability to the fire.
2. Carries out its functions only when properly installed.

By appointment, the material is divided into three types:

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

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

The advantages of using a vapor barrier film:

1. The service life is increased insulation.
2. Reduces the likelihood of condensation and contamination of structures with fungus and mold.
3. The possibility of penetration into the premises is excluded volatile insulation particles.

Mounting

Installation diagram of isospan on an insulated roof

To lay the material you will need:

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

Isospan laying on the roof:

1. Roof insulation begins with fixing the vapor barrier film(B, C, D) to the structural frame or to the rough skin.
2. Fix the material with staples or galvanized nails. For additional sealing, the seams are fastened with special tape isospan SL or KL.
3. The sheets are rolled horizontally in the bottom-up direction. An overlap of 15-18 mm is made between adjacent canvases.
4. During installation, you need to monitor the tight fit of the film to the insulation.
5. Over thermal insulation A, AS, AM, AQ proff.
6. Isospan A is fastened with antiseptic locks to the rafters nails or self-tapping screws, so that a gap of 5 mm is formed. Izospan AS, AM, AQ proff, on the contrary, should fit snugly to the insulation. Therefore, it is attached to the rafters with staples or galvanized nails.
7. Installation starts from the bottom of the slopes. Along the slope overhang, the membrane is inserted into the gutter. The canvas is rolled horizontally, making sure that there are no distortions. It is important to secure the material with an interference fit. The permissible sagging is no more than 2 cm. The canvases should overlap each other by 15 cm horizontally, and 20 cm vertically.
8. So that condensation can evaporate, in the area of ​​the ridge and in the lower part of the roof, ventilation holes are provided.
9. Over vapor barrier membrane mount the crate.

Izospan will perform its function only if it is properly laid. 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 stronger and more durable counterparts.

Wall insulation:

1. For ventilated facades Isospan A and AM are suitable. In cases where there is a possibility of fire, use a material with OZD.
2. The membrane is fixed on top of the insulation with the smooth side out. The sheets are rolled out so that there is an overlap of 10 cm.
3. Isospan is fastened along the building frame with staples. On top of the vapor-permeable membrane, locks are vertically fixed, on which the facing material is attached. To prevent the effect of acoustic pops from appearing during operation, there should be no loose and sagging sections along the entire length of the canvas.
4. To remove moisture, the design necessarily provides for a ventilation gap in the lower part of the skin. Izospan is laid so that the moisture accumulated under the casing drains into the drainage system.