Technical characteristics of hydro vapor barrier films. Membrane “Izospan” - features and general information. So it is used

The process of choosing wind, hydro and vapor protection should be carried out with special care, since among a large number of manufacturers, you need to select the material that turns out to be the most reliable. The membrane of the Izospan company has established itself as a high-quality product, the strength of which has been tested over the years. We will talk further about the features and subtleties of installing the Izospan membrane.

Membrane “Izospan” - features and general information

To create comfortable living conditions in the house and to improve the duration of its operation, care should be taken to install high-quality insulation. It will help protect the foundation, walls, floors and ceilings from the harmful effects of the environment.

Without the use of insulating materials, moisture, wind or condensation can destroy both the external and internal finishing of the building. In this case, it is recommended to use high-quality insulation, which Izospan materials can provide.

These products have been on the market for more than ten years and are in great demand in both consumer and professional construction. For the production of Izospan waterproofing materials, a special individual technical base. The quality of the products is carefully monitored by specialists from the development department.

“Izospan” materials that provide steam and moisture protection are distinguished by the availability of Certificates of Conformity and Fire Safety Certificates.

A wide variety of types and forms of Izospan materials allows you to choose exactly the type of insulation that the buyer needs.

Behind long time presence of the Izospan company in the modern construction market, products appeared that were externally similar to the Izospan products, but had dubious quality and low specifications. To avoid counterfeiting when purchasing an Izospan membrane, you should adhere to the following rules:

• all materials have a specialized branded sleeve and packaging; a special polyethylene sleeve is used for packaging the membrane, with branded colors and a special print;
• Each of the rolls is equipped with instructions for use and an information leaflet that introduces other products of the company;
• on the inner surface of the sleeve on which the material is located there is a stamp with the “HEXA” logo;
• one of the ends of the roll has a logo indicating information about the batch, packer number and date of manufacture of the product;
• All side sections of the roll are sealed with tape that has individual markings with the name of the material.

Advantages of using Izospan materials

Due to the presence of heat-reflecting characteristics, Izospan materials provide reliable protection of all types of buildings from wind and moisture.

Thanks to the use of “Izospan” vapor barrier, the risk of high humidity in attics, and with the help of heat-reflecting properties it is possible to provide reliable protection against the formation of condensation masses.

With the help of mounting connecting tapes it is possible to provide additional tightness of the fastening. In addition, the functions of the material are also added to provide additional wind protection for the building.

The scope of use of the Izospan membrane is quite wide and extends to internal and external insulation of walls, roofs, floors, ceilings, thereby ensuring the risk of condensation and damage to the finish.

It is possible to use Izospan insulation as a floor underlay. In this case, the materials reflect even infrared rays and direct the heat flow directly into the room.

The use of these materials allows you to provide reliable protection from:

• exposure to high humidity;
• formation of condensate masses;
• hit by winds.

In addition, the functional features of the membranes make it possible to reduce the temperature load associated with seasonal temperature changes. Insulation can protect the insulation in the system:

• façade purposes;
• roofing structures;
• walls and interfloor ceilings;
• floor coverings.

In addition, the use of Izospan materials allows you to create favorable and comfortable living conditions indoors.

In relation to the main functional features of materials presented on the modern construction market, Izospan products are characterized by:

• ensuring wind resistance and protection of roofing systems;
• vapor barrier of walls and ceilings;
• connecting joints of materials using connecting tapes.

“Izospan” characteristics and variety of material

We invite you to explore the entire range of products produced by the Izospan company:

1. Membranes or films for waterproofing vapor and wind protection purposes.

Hydro- and wind protection is manufactured to provide protection for the elements of the insulation system and structural elements buildings from the formation of condensation, winds and moisture that comes from the environment.

At the same time, the outer side of this protection has a vapor-permeable shell, with the help of which all water vapor and accumulations are evaporated.

The use of these materials is widespread in roofing and wall structures, as well as in ventilated facades. Due to the combination of high water resistance and vapor permeability, these membranes are in high demand among consumers.

2. Films for vapor barrier and waterproofing purposes.

These materials protect the insulation on walls, roofs and ceilings from the ingress of steam and the formation of condensation, which significantly reduces the quality of insulation.

With the help of vapor and waterproofing films, the thermal insulation of the insulation is preserved and the service life of the entire structure is extended. In addition, condensation does not collect inside the walls, mold and mildew do not form, and corrosion does not form on metal elements.

3. Heat-vapor-waterproofing of a reflective type, which has an energy-saving effect.

These materials have a metallized surface that reflects infrared rays and provides reliable protection of the insulation from steam inside and from moisture from the outside. The use of these materials allows you to save energy for heating the room in winter.

4. The use of connecting tapes allows for reliable joining of the material for a long time.

Types of Izospan membranes and their features

1. “Izospan Aqua Prof” - appears in the form of a professional split-layer protective membrane, which provides protection for the insulation and roofing system from wind, high humidity and condensation. The material is laid directly on insulation materials, ventilation gap, in in this case, absent. Thus, there is no need to spend money on arranging a special sheathing.

This material has high properties vapor permeability, resistance to light and moisture. In addition, it is resistant to mechanical damage, and any weather is suitable for its installation.

Scope of material use:

• surfaces of insulated and non-insulated sloping roofs;
• arrangement of frame walls;
• external wall insulation;
• waterproofing of ventilated facades;
• arrangement of attic floors.

The material is 100 percent polypropylene, it is able to work in such temperature conditions-60 to + 75.

2. “Izospan AM” is a vapor-permeable membrane, which consists of three layers. Used to provide protection for thermal insulation and roofing elements and wall system from moisture and condensation. The material has high moisture-repellent properties, but at the same time it is vapor-permeable, therefore increasing the service life of the building.

It is prohibited to use the material as any type of roofing finishing covering.

3. “Izospan AS” - has the form of a three-layer membrane, which is used to protect different parts buildings from moisture, wind and condensation. Among the advantages of the material are:

• ease of installation and installation work;
• high resistance to moisture;
• high level of strength before stretching and tearing;
• high level of vapor permeability;
• resistance to ultraviolet radiation;
• environmental friendliness and safety of use;
• ease of transportation, convenient shape and light weight.

4. “Izospan A” is a vapor-permeable membrane that protects the insulation and wall surfaces from atmospheric influences and wind. In addition, it helps remove steam from the interior of the room. The material is laid from the outside of the insulation onto the surface before carrying out external finishing works. Due to the use of a membrane, the quality of insulation improves and the service life of the entire building is extended.

Scope of use extends to:

• surface of frame walls;
• external surfaces of walls;
• ventilated facades.

5. “Izospan fire-retardant action (OZA) A” - new variety wind- and moisture-proof membrane with fire-retardant additives. The use of a membrane of this type not only protects the building from wind, condensation and moisture, but also prevents accidental fire, which occurs in the following cases:

• during welding work;
• in the process of waterproofing the basement;
• in other situations.

6. “Izospan AF” is a non-flammable membrane used in the process of waterproofing ventilated façade sections, insulation and other structural elements of the building. The material is based on the use of fiberglass, which is absolutely non-flammable.

7. “Izospan AF+” is a non-flammable membrane with enhanced characteristics, which is used for wind and waterproofing of building elements. In addition, by using of this material provided additional protection buildings from fire.

How to lay Izospan: features of membrane installation

When answering the question of which side to lay “Izospan” on, you should be extremely careful, since improper installation of the material will lead to a violation of the integrity of the waterproofing system.

The membrane on one side has a layer that allows air to pass through, thereby eliminating condensation, while the other side is not capable of allowing moisture or wind to pass through.

We suggest that you familiarize yourself with the recommendations for installing Izospan AS and AM membranes. They are used to provide protection to roofing finishes from wind and moisture. The material is fastened directly to heat-insulating materials, and the ventilation gap should not be observed. The smooth blue side of the material should be on the outside of the roof.

These types of membranes provide reliable protection of the building from precipitation, wind or roofing defects. In addition, the membrane improves the removal of moisture through the surface of the insulation.

These membranes are not used as primary or secondary roofing materials.

If a membrane is installed on an insulated roof, the insulation is cut and rolled directly onto it. It is better to start installation from the bottom of the roof. The minimum overlap is 150 mm. A construction stapler is used to fix the stretched material on the surface of the rafters.

Next, wooden antiseptic counter slats are attached to the material. They are fixed using nails or self-tapping screws. The vertical overlap or junction of two parts of the membrane is pressed with a counter-batten. In addition, sheathing is mounted on them for further finishing of the roof. Between the outer part of the membrane and roofing covering there must be a ventilation gap that will help remove condensation from the under-roof space. In addition, you need to worry about arranging a ventilation gap in the ridge part.

The membrane is fixed in a tense position, using the lower edge to ensure the bottom drain of condensate, which enters the drainage system.

Installation of Izospan A, AF membranes is carried out with a ventilation gap of 4-5 cm, on top of insulation, rafters or sheathing.

If materials are laid on an insulated roof, then the material is rolled out and cut on the rafters. Installation is carried out by laying horizontal sheets overlapping, with their smooth side being on the outside. Minimum overlap 150 mm.

To fix the canvases, counter-battens are also used, which are fixed with nails or self-tapping screws. The minimum sagging of the membrane is 2 cm. The material should not come into contact with the insulation or solid wooden areas, since this negatively affects its functional activity.

Application of “Izospan” video:

Izospan materials are used to insulate surfaces from moisture. They demonstrate required level fire safety and, in addition, help retain heat inside the room. Presented to the consumer wide choose products that have the properties necessary for organizing high-quality insulation.

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.

Membrane non-woven fabric(to create a vapor-permeable barrier) is intended for external insulation 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.

This material is worth buying due to its high resistance to negative factors, durability and excellent technical characteristics. He can withstand power loads and not lose shape, and also resist the influence of ultraviolet rays. You will also be pleased with the ease of installation: the user will be able to install the barrier independently using minimal amount improvised means. 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.

General technical characteristics:

• excellent strength;
• elasticity;
• 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 installing on the roof, the material is cut into wide stripes and is applied in such a way 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 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. The back side is smooth, so drops either roll down it 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

Advantages of the material:

• strength;
• 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 on long 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 before laying the membrane on most building surfaces not required.

Isopan A is an innovative material that contains components that make it possible to use it on surfaces with elevated temperature. 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 of insulation due to its 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 dirt floors, cement screeds in wet areas and as a windbreak. 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 roofing vapor barrier for pitched roofs, as well as 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 insulation 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 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 also have different material densities. 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 good results, it is necessary to strictly follow the manufacturer’s recommendations, observe the subtleties of using the Izopan material and be sure to take into account the characteristics of the surface on top of which the film layer will be laid.

The name of the material comes from the name of the company that produces it. It refers to several polymer films that are completely different in properties and purpose. All products of this brand are usually divided into three main groups:

• Izospan A membranes protecting from water and wind. They are widely used in roofing and facade work to protect roof structural elements, as well as the interior, from precipitation. In this case, the film is able to pass steam through itself, bringing it out. This property of such membranes prevents moisture from forming condensation on the insulation or parts of the roof rafter system. Some varieties have fire retardant treatment. The average vapor permeability is determined to be around 3500 g/m² per day. It must be said right away that the material cannot be used on a roof with a slope angle of less than 35ºC. Mandatory requirement- installation should only be carried out in normal weather;

• films that do not allow water and steam to pass through belong to the Izospan V line. Unlike its brother, it is mounted indoors. After all, its task is to prevent steam from penetrating from the room into the thermal insulation layer and forming condensation there. Insulation boards covered with such a membrane always remain dry, which protects them from the formation of mold and fungal colonies. Instructions for use of Izospan B will be described in more detail;
• Izospan C is designed not only to protect the insulation layer from wind, high humidity and steam, but also to create an additional insulating effect due to a special coating that can reflect infrared rays. This greatly reduces the energy consumption of the home, creating good savings on heating costs. It has a structure consisting of two layers. One layer is always smooth, and the other is rough, which better holds condensation. The material is very waterproof, more than 1000 mm. water Art. Its resistance to steam penetration is 7.0 Pa/mg.

Technical characteristics of Izospan films:

Helpful advice! The instructions for use of Izospan B suggest that if the film breaks on any sharp objects, it can and should be repaired. To do this, the damaged area is glued with a special adhesive film.

All of the listed varieties, despite their differences, have a number of positive qualities common to them:

• they are easy to install and are supplied in roll form;
• are not afraid of ultraviolet radiation;
• do not allow moisture to pass through;
• their cost is quite suitable for anyone who is engaged in construction or insulation of their home.

Next, we will consider in detail the instructions for using Izospan B and its technical and quality characteristics, since this particular type of membrane is in greatest demand due to its very successful combination of consumer properties and price.

Technical characteristics of vapor barrier Izospan B

This type includes two-layer vapor barrier membranes, capable of not only retaining moisture, but also preventing steam from penetrating through them. They are 100% polypropylene. These films are produced in rolls with a width of 160 cm. One roll can cover a surface of 70 m². The film density is 70 g/m². These membranes are quite strong, since their tensile load along the fibers is 128 N/cm, and across the fibers is 104 N/cm.

Vapor permeability rates are very low and are around 22.4 g/m²/day. Water resistance - 1000 mm. water Art., which is enough. Resistance to ultraviolet rays observed within 4 months of continuous exposure. The technical characteristics of the Izospan B vapor barrier allow it to be used in a wide temperature range, which ranges from -60 to 80ºС.

Instructions for use of Izospan B

Before using this material for vapor barrier purposes, you need to familiarize yourself with some of the requirements for its installation:

• When covering insulation installed on vertical or inclined surfaces, work must be carried out from top to bottom. The strips of material are fastened horizontally with an overlap of 15 cm. A special adhesive film allows you to isolate the joints;
• Not everyone knows which side to put Izospan B insulation on. Meanwhile, this is very critical, since improper installation completely eliminates the effect of using this material. It is necessary to remember that the smooth side is always placed on the insulation, and the rough side is directed into the room;

Diagram of the correct use of film for vapor barrier in the process using expanded clay

• attach the membrane to the protected surface using wooden blocks, clamping strips and construction stapler.

Since this vapor barrier material has wide scope application, then we will consider the features of installation on several types of surfaces. When creating a vapor barrier layer in the attic, the membrane can be attached to the rafters in two ways.

Izospan is an insulating film coating. The main purpose of the film is to ensure that the original thermal insulation characteristics are maintained throughout its entire service life. It is difficult to imagine a modern construction project without the use of various types of thermal insulation. , Izover, various and just polystyrene - all these materials require their own protection.

Thermal insulation materials practically envelop our house, retain heat on frosty and rainy days, create comfort in the hot summer, preventing the penetration of heat flows. But how to protect the thermal insulation belt from negative atmospheric phenomena? Reliable protection from moisture, rain, destructive wind, 100% polypropylene, with a proud name, is designed to provide Izospan.

Create a barrier at the stages construction process, to perform the function of protective insulation for thermal insulation, this is the true purpose that isospan vapor barrier successfully fulfills. Despite its apparent simplicity, the material differs by type.

We bring to your attention - Izospan instructions for use. Figure it out: which side to lay the isospan on. Consider the isospan technical characteristics, and the installation method.

Worthy competitors of isospan:

Before moving on to detailed review, it should be clarified that the films are presented by the manufacturer in a wide variety and have different purposes. Vapor barrier films and membranes are divided into absolutely vapor- and water-tight and partially permeable to moisture only in one direction. Some of the materials successfully complement thermal insulation, enhancing its characteristics.

Vapor barrier isospan technical characteristics

• The material is waterproof;
• Elasticity is beyond praise, the most difficult areas and it’s not difficult to get around the bends;

• Resistance to ultraviolet radiation;
• Resistance to negative atmospheric phenomena;
• Does not emit harmful substances. Safe for human health. Does not harm the environment.

• Withstands temperature changes in the range from – 60 °C to + 80 °C
• Fireproof elements added in production determine the G4 flammability group, according to fire danger, which is confirmed by relevant certificates.

Izospan has various applications, given the area construction use. Isospan, a type of insulation unique in its structure, has individual technical characteristics and its own labeling.

Manufacturers classify their products by letter indices A, B, C, D, F, R. The combination of letter indices adds numerous variety, applications and installation of isospan. Each new designation assumes its own isospan application. This fact must be taken into account when building your home.

Roof vapor barrier isospan

Izospan A

The membrane, like a check valve, freely allows water vapor to pass through from the thermal insulation side. Does not interfere with the natural ventilation of the insulation. On the other hand, it reliably blocks the penetration of moisture from the external atmosphere, prevents the formation of condensation, and prevents the wind from destroying the structure of the insulation.

Due to the water resistance of the material on the outside, membranes are widely used in roofing structures and are widely used as protection for walls and ventilated facades of buildings and structures for any purpose.

G waterproofingthe property that the isospan membrane has long-term extends the service life of the thermal insulation. Even the best insulation deteriorates over time under the influence of wind, application Izospan A will become ideal solution to protect the house from the outside.

In a nutshell, let’s clarify which side to lay the insulation Izospan A.The question of which side of isospan A should be laid is far from idle. As we noted, its operation is carried out on the principle of a check valve. Or, if you want: – let everyone out, don’t let anyone through. The membrane must be laid on the outside, on top of the insulation.

The smooth side, which is easily identified by touch, should “look” towards the street. The roll is cut into wide strips of suitable size, after which it is carefully spread over the area, overlapping with the next layer.

Roof vapor barrier

Water vapor barrier of the roof starts from the bottom. When laying isospan A membranes, contact with the thermal insulation material should be avoided. Touching the membrane significantly reduces its waterproofing properties.

Probably those who went camping with their grandfather, canvas tent, we noticed that if during rain you run your finger along the “roof” from the inside, then literally after 10 minutes it will drip in this place. It is for this reason that laying Izospan A is allowed only with double lathing.

Isospan flooring is carried out outside the thermal insulation on a lathing made of slats. The use of a membrane increases the degree of insulation and extends the service life of the entire structure.

It is extremely important to monitor the absence of possible swelling or sagging. Otherwise, you will become a constant listener to gusts of wind with the characteristic sounds of a membrane beating on the roof. Thin slats are enough to secure isospan A, leaving 2-3 centimeters of free space to the insulation.

Izospan B

As we found out, isospan A, firstly, protects from the wind, and secondly, it creates a powerful hydrobarrier for the insulation. There remains a danger in the form of condensation, wetting of the insulation - condensation, which, before passing through the membrane in the form of steam, saturates the thermal insulation with moisture.

Humidification by only 5% will reduce the thermal insulation performance by half. The further prospect is the penetration of condensation onto the metal tiles, with the subsequent transformation of the roof into a colander.

Anti-condensation surface combined withsteam and waterproof effectwill save you from such troubles.Conducting installation work When arranging a roof, you must clearly understand that even the best insulation for a roof is gradually saturated with water vapor.

Creating a barrier to internal couples -Izospan Bwill serve as a kind of vapor barrier. The material consists of two layers, a layer with a smooth structure is adjacent to the insulation during installation, the second fleecy side is designed to absorb condensate.

That is why the installation of the coating is always carried out with the fleecy side down, with a gap to the finishing materials, for ventilation and drying. Type B is laid with an overlap with an overlap of at least 10 centimeters on the insulation side and secured using a construction stapler or another method.

Izospan S

The structure of the material combines two layers: on one side there is a smooth surface, on the other there is a fleecy surface. The fleecy layer retains condensation followed by weathering. Izospan C creates a vapor barrier for the insulation, preventing the absorption of vapor from water particles formed inside the room.

The material is widely used in the construction of walls, installation of insulated, sloping roofs and interfloor ceilings. P aro-waterproofing using type C, installed in various cement screeds, and inflat roof structures.

In a word, in structure and characteristics the material is very similar to type B. At the same time, it has an increased margin of safety and, therefore, reliability super-dense panels above. Buying isospan C will cost the consumer about 50-60% more than type B.

Characteristics of isospan Type C:

• 100% polypropylene;
• Applicable temperature range -60 – +80 °C;
• Tensile load: longitudinal // transverse. N//5cm not less than 197/119
• Vapor-tight
• water resistance not less than: 1000 mm water column.

Application of isospan S:

1. Sloping roof with an overlap of at least 15 cm
2. Attic floor protection. A vapor barrier layer is spread on top of the insulation, smooth side down;
3. Concrete floor. spread on a concrete surface, smooth side down;
4. Wooden floors of horizontal design.

Laying the canvas on sloping roofs should be done from bottom to top. The material overlaps about 15 centimeters.

To avoid depressurization, overlapped joints are glued together with a special tape that is sticky on both sides, similar to double-sided tape.

The structure is secured with slats 5 centimeters thick. A gap of at least 5 centimeters is left between the roof tiles and the vapor barrier layer; it is necessary for natural ventilation.

Izospan C is spread on top of the insulation; for ventilation it is necessary to leave a gap of about 50 millimeters from the panel to the heat insulating material. In the installation of a concrete floor, type C, an overlap is spread on the concrete surface, then a cement screed is laid on the canvas, and only after that the floor covering is installed.

Izospan D

High-strength, completely moisture-proof waterproofing material. Polypropylene sheet with one-sided laminated polypropylene coating. The versatility of the moisture-vapor-proof material implies widespread use in technology construction production when constructing any types of structures.

Izospan D successfully withstands moderately strong mechanical loads, is resistant to tearing, withstands strong gusts of wind, and in winter copes with heavy snow loads. In comparison with other similar films, Izospan D has gained fame as the most durable and reliable option.

Izospan D Application area

In any type of roof, as a barrier preventing the formation of under-roof condensation. Universal application in the device hydro- and vapor barriersduring the construction of buildings and structures. Protection of wooden structures.The material largely resists negative atmospheric phenomena.

Izospan D is often used on construction sites as a temporary roof covering and installation of a protective wall in objects under construction. Such a roof or wall can last up to four months.

Type D is especially popular when installing concrete floors that require protecting against earth moisture.

Application

1. In non-insulated roofs as protection for wooden structures;
2. As protection against roof condensation;
3. Protection from negative atmospheric phenomena;
4. In the arrangement of basement floors;
5. Installation of concrete floors.

Recently, more and more owners country houses understand the importance of the role they play vapor barrier materials, the constantly growing demand is a strong confirmation of this.

Izospan D is spread directly on the rafters directly onto the insulated surface pitched roof. In this case, the layers of material are the same and you don’t have to worry about which side to lay Izospan to the insulation. Installation is carried out horizontally, overlapping, rolls are cut into sheets the right size easy enough.

Work is carried out from the lower element of the roof and gradually proceeds towards the top. During installation, the joints are glued together with SL tape, similar to double-sided tape.

An adhesive surface on both sides connects two vapor-waterproofing sheets. The laid isospan is fixed to the rafters wooden slats or staples from a construction stapler.

To summarize our review, it remains to add that the manufacturer produces 14 types of similar roll insulation. We have considered only four main types. Buyer based on characteristics different types, always has the opportunity to buy isospan specifically for his needs.

In addition, the manufacturer does not stand still and is constantly expanding the range of products, for example, there is a film option with fire retardant additives.

From our review it is clear that working with the material does not require complex special skills and can be done by almost any man. Ease of use and low installation costs make this building material have a wide range of uses.

The vapor barrier material will completely take over the functions that will ensure the reliability and long service life of your home and industrial thermal insulation.

The moisture and vapor barrier device is very important stage construction. One of the best materials used for this purpose is isospan. It falls into the category of comparatively new products, used in the protection of structures. The manufacturer offers 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 popular insulating materials and provided their technical characteristics. Do-it-yourselfers will find installation manuals and useful tips.

Most isospan is produced in the form of a membrane or film. Both modifications have a vapor barrier function. There are types that are 100% waterproof and unilaterally permeable. 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 are distinguished by individual design features.

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

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

Three main groups of isospan can be distinguished: moisture- and windproof, steam- and moisture-proof, and vapor-proof. Materials included in the second group are used for interior finishing work.

Vapor-tight isospan is used when performing both internal and external work. Based on 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 high density, therefore, indispensable for insulating attics, walls, and roofs. Fungi and mold do not develop on it.

This diffusion membrane retains water, but steam passes through it unimpeded. Polypropylene is used for production. It strengthens and protects thermal insulation from the influence of outdoor atmospheric moisture or cold air from a room that is not heated.

Izospan A is an excellent wind barrier when making ventilated facades. It neutralizes the consequences caused by the onslaught of side winds, which favor the evaporation of heated air from the heat-insulating layer

In order for isospan A to fully reveal its capabilities, it is necessary to strictly follow the technology during installation. Since air streams pass through it only one-way, the sides should not be confused under any circumstances. Otherwise, the insulating layer will get wet due to the accumulation of moisture in it.

Isospan A is produced in rolls 1.6 m wide. The area of ​​the material in the reel is 35.7 m². The optimal temperature limits for operation are -60 - 80⁰. The membrane can be exposed to ultraviolet radiation for three or even four months without loss of characteristics. In the future, these aggressive rays will gradually reduce the UV stability of the material.

Izospan marked with the letter A may contain fire retardant additives. Then another one is added to all its characteristics - fire protection. This brand belongs to the G1 flammability group, and in terms of flame propagation speed - to the RP1 group.

The material can withstand fairly high tensile 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, it is advisable to use isospan A 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

Unlike the group A membrane, the AM film has a two-layer structure. It has also found application for protecting insulation, roofing elements from condensation, weathering.

These types of insulation have a number of differences:

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

There are differences in terms of installation. If you choose brand A, you need air gap, otherwise steam will not be removed efficiently. AS and AD membranes are mounted directly on the insulation.

Second group marked B

This vapor barrier has a slightly lower price.

Technical parameters of isospan B are as follows:

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

It is used as an under-roofing film in frame enclosing structures and in interior partitions. On one side it is smooth, the opposite side is rough, where moisture is retained and evaporates.

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

Lay isospan grade B so that the rough side is on top. It is a high-quality vapor and waterproofing for rooms with traditional high humidity- bathrooms, toilets, showers, basements

The price of this brand is the most affordable. Unlike brand A, this material is not attached to the top of the insulation, but to its lower side. Do this from bottom to top, then overlap. For better capture of water vapor, a 5-centimeter gap above the rough layer is required.

Features of group C material

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

The two-layer film is characterized by particular strength. Polymer membranes Group C performs hydro- and vapor barrier for the protection of attics and roofs with a slope of maximum 35⁰.

Used as a waterproofing substrate under metal tiles, as it perfectly protects rafter system from rain and melt water. Moreover, this good waterproofing for different types of bases. 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 resistance to UV rays. Tensile strength is also high - longitudinal breaking load is no less than 1068 N/5 cm, 890 - transverse.

Due to its great strength, grade D polypropylene fabric can easily 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, functioning normally for about 4 months.

The material also performed well as under-roof waterproofing in cold roofs. He saves wooden elements from the destructive influence of moisture penetrating from the outside, as well as wind and snow, which may end up there through leaks in the roof. This is also an effective waterproofing layer in basement floors.

Instructions for installing isospan

Steam, moisture and wind protection of a building is a complex undertaking. Using glassine or polyethylene film ineffective. Izospan is designed specifically for this purpose and is high quality tested by practice.

For installation, in addition to the isospan itself, you need a supply of tools and fasteners:

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

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

Installation of group A membrane

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

The outer side of isospan A prevents moisture and wind from affecting the condition of the insulation. Internal - prevents the formation of condensation, because has the property of removing steam

Isospan A is laid in accordance with its technical characteristics on top of the insulation using 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. Alternately, the membrane pieces are placed on the frame horizontally overlapping with the even side out, starting from the bottom, and moving up.
3. Fasten the protection to the frame with an overlap, using a construction stapler or another method. The minimum amount of overlap both horizontally and vertically is 100 mm.
4. The material is further 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 fastening area.
7. Wooden counter-battens are attached on top of the isospan layer vertically in relation to the frame. They are pre-treated with an antiseptic. The size of the slats is 40 x 50 mm. They play a role load-bearing 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 external cladding. The edge of the membrane at the bottom is located so as to divert the flowing moisture into the drain of the building's base.

Laying Am and As films in an insulated pitched roof

The material protects the supporting structure and insulation from condensation that collects under the roof, as well as from snow, wind, and moisture that enter through loose coverings.

The membrane is laid without a ventilation gap, so there is no need to install additional sheathing between the insulation layer and the isospan. Secure it taut.

The sequence of operations is as follows:

1. The roll is rolled out and cut directly on top of the insulation.
2. Lay out the panels horizontally, turning the white side towards the insulation. Start of installation - Bottom part roofs. 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 continuous 2-sided isospan KL tape.
5. Traces of fastening with nails or self-tapping screws are covered - glued with a self-adhesive strip along rafter legs and other elements. This is especially true for roofs with a slight slope - up to 22⁰.
6. Antiseptic wooden slats 4 x 5 cm are attached vertically over the tape along the rafters.
7. Install the sheathing along the counter-battens. Depending on the type of roof, it can be a continuous deck.

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

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

When installing isospan over the sheathing, slight sagging is allowed. A membrane without insulation is practically useless.

Application of insulating material B

This type of membrane perfectly performs the functions of a vapor barrier, protecting the insulating layer from water vapor rushing upward from the side of the room, and also protects the space of the rooms from insulation particles getting into them.

It is mounted on the insulation side facing the inside of the room. Installation is carried out using a construction stapler on rafters or rough sheathing. Sometimes galvanized nails are used for this purpose. It is correct 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 tape. Contact points of the material with structures made of any material are sealed by using a one-sided adhesive strip of isospan ML proff.

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

TO wooden base interior decoration mounted with a ventilation gap of about 40 mm. If isospan is used as a vapor barrier for a frame wall, it is fixed on the inside of the insulation to the loaded parts of the frame or to the rough sheathing.

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

Izospan as a vapor barrier attic floor placed in between finishing material ceiling - rough ceiling. Turn to the last one smooth surface. In this case, a ventilation gap is also required.

The vapor-permeable membrane of grade B is also a good hydro-vapor barrier for interfloor ceilings. Mounted between ceiling trim and draft system. The rough side is turned down. They are secured to the beams with an overlap.

A ventilation gap is created between the insulation layer and the final layer of vapor barrier, between the finished floor and the vapor barrier layer, between the finished ceiling material and the bottom layer of isospan B.

Bottom basement floor must be protected with a layer of vapor barrier. 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

The type of isospan D for cold pitched roofs 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, and atmospheric moisture.

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

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

Conclusions and useful video on the topic

Video #1. How to properly install a vapor barrier in a house:

Video #2. Sequence of work when arranging the interfloor and ceiling:

Video #3. Demonstration of the process of laying vapor barrier film B for protection roofing pie from household steam:

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

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

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