Vapor barrier for the roof "TechnoNIKOL": a detailed review of the company's products. TechnoNIKOL materials - a modern solution for roof vapor barrier Roofing vapor barrier film

The vapor barrier film for the roof is a material that, due to its characteristics, protects wooden structures from the damaging effects of steam, and also does not release heat outside the house. What are the types of vapor barrier films for the roof, we will tell in this article.

What is vapor barrier film for?

The task of the vapor barrier film is to prevent the penetration of steam into the thermal insulation and the supporting structures of the roof. In the absence of vapor barrier films, the period of operation of the roof is reduced and there is a need for repairs.

The air in the room contains a large amount of moisture, since people cook food, take a shower, etc. in the premises. If the vapor barrier is not laid in the structures, moisture settles in the insulation. Excessive moisture leads to a decrease in the properties of the heat insulator. Corrosion processes also begin, which lead to disastrous results: wooden elements become infected with a fungus, and metal elements are corroded by rust.
Vapor barrier film eliminates the following problems:

the appearance of condensate on wooden elements and building structures; destruction of the interior decoration of the ceiling and walls due to excessive humidity in the premises; freezing of the insulation layer;

What roofs are suitable for

Vapor barrier film is used for all types of houses and roofs. At the same time, the complexity of the roof structure is unimportant. The flexibility, lightness and strength of the material allows it to be used on any roof, regardless of the level of their curvature. Roof vapor barrier films are indispensable for:

Roofs of frame houses. For heated cottages and country houses. For heated verandas and attics. To protect the roof of the bath and / or sauna.

Pitched metal roofs especially need protection from steam, as increased moisture provokes destructive processes in them, corrosion, the appearance of microcracks and the loss of basic functional abilities. In order to extend the life of metal tiles or seam roofing, it is important to use reliable vapor barrier films, the types of which will be discussed below .

What are vapor barrier films

A large number of films for roof vapor barriers are presented on the building materials market. There are the following types:

Polyethylene films

Polyethylene films are materials whose key feature is reinforcement with fabric or reinforcing mesh. This is done to give strength.

Films are of two types:

Perforated - they have micro-holes that provide vapor permeability. However, this indicator does not correspond to the norm, therefore, when arranging an insulating pie, a ventilation gap must be made;

Non-perforated - materials used directly for vapor barrier. During their installation, tapes are used to connect individual canvases.

There is another kind of polyethylene films - laminated with aluminum foil. Their main advantage is good vapor barrier properties. Films are not suitable for rooms with a normal microclimate. But when arranging saunas or baths, they are widely used.

Polypropylene films

Polypropylene films are materials that have been used for many years. At first they were brought from Finland, and then they began to produce them in Russia. The main advantage of such films is excellent strength characteristics and resistance to sunlight. The material has another significant advantage: the presence anti-condensation layer moisture absorbing and retaining. Such a layer has excellent performance, because even in critical conditions it absorbs all moisture, excluding the formation of drops. And when the causes of condensation disappear, polypropylene films dry naturally.

Vapor barrier films Ondutis

There are several types of Ondutis films that are suitable for creating a vapor barrier layer under the roof: Ondutis B (R70) is a three-layer polymer vapor barrier membrane that is used for insulated roofs and mansard roofs. Ondutis D (RV) are anti-condensation films with a special inner layer of non-woven fleecy textiles in which moisture is concentrated. Used for metal roofs. In addition, this type of Ondutis film can serve as a temporary roof covering for 2 months.

How to choose a roofing film

When choosing a vapor barrier film for a roof, pay attention to:

The purpose of the film. For the roof, use only roofing foil. The vapor permeability of the film. The lower the better. For high-quality insulation of a dwelling, the vapor permeability index is 1 g / m 2 per day. Film weight. The greater the weight of the film, the higher the density of the material and, accordingly, its strength. No foreign odors is an important indicator. The film used in the house must be safe for humans and the environment.

Insulation of the outer walls and roof of the house reduces heat loss and maintains favorable conditions in the living quarters. Long-term operation of the building is ensured by enclosing structures that are not damaged by climatic influences. Hydro and vapor barrier for the roof of the Russian company TechnoNIKOL protects the traditional mineral fiber insulation, which easily absorbs moisture from internal evaporation and precipitation. Wetting a porous material leads to an increase in its thermal conductivity, the return of condensate to the room, and the formation of conditions for the development of fungal microorganisms.

In the absence of a protective barrier, rotting of wooden roof structures, a change in humidity levels and a violation of interior decoration occur. Multilayer vapor barrier TechnoNikol prevents the formation of excess condensate in the fibrous mineral insulation. The membrane allows air to pass through and maintains its natural circulation in the room. The characteristics of the breathable material allow you to create a microclimate with indicators of a wooden structure. TechnoNikol produces several types of vapor barrier film, which is used in the insulation of pitched and flat roofs, frame walls, and ventilated facades.

Varieties of insulation

As usual, basalt wool mats or expanded clay gravel are chosen. Both materials have good hygroscopicity and easily absorb moisture. Rolled vapor barrier for flat roofs TechnoNikol will reliably protect the porous insulation from condensate that forms from the side of the warm slab. Three layers of polyethylene have a special density and can withstand the increased load of the coating, atmospheric precipitation in the form of snow marks and a large volume of water. The vapor barrier is laid on a concrete slab or metal flooring sheet, where it serves as a barrier to humid air from the premises and additionally protects the supporting structures of the house from climatic influences.

Three-layer vapor barrier for pitched roofs and walls TechnoNikol called Optima consists of two sheets of non-woven spunbond polypropylene and a film membrane between them. The inner layer with pores with a diameter less than a water molecule allows air to pass through, but retains steam. Double-sided polypropylene threads provide vapor barrier strength in tension and compression, which allows it to be used in the range from -40 to + 80C. The multi-layer material is resistant to temperature changes, humid, acidic or alkaline environments.

Breathable vapor barrier Optima TechnoNikol is suitable for protecting the insulation of a gable roof of an attic, external walls of a frame type, ventilated facades. The film is laid from the side of a warm room, with the front surface inside. The micropores of the three-layer barrier partially pass vapors that do not linger in mineral wool, thanks to TechnoNikol diffuse waterproofing. Bilateral protection of a heater provides preservation of working characteristics and long term of operation.

In addition to the use on the side of a residential attic, the vapor barrier of the Optima TechnoNikol series is used for external insulation of a gable roof along the rafters and when installing a roof with a cold attic. One-sided diffusion of steam through a three-layer polymer membrane prevents the formation of condensate and its negative impact on wooden supporting structures. A vapor barrier on a cold roof protects the interior of the house from wind, moisture and dust.

Reinforced vapor barrier for the roof consists of a durable polymer mesh, which is coated on both sides with polyethylene by ultrasonic welding. The moisture-impervious three-layer film withstands increased tensile loads, which makes it possible to use it on flat roofs, gable roofs of attics and cold attics, in frame structures and internal wall insulation. Reinforced vapor barrier is laid horizontally or vertically from the side of a warm room, regardless of the layer marking. The versatility of the material determines its higher cost, which pays off with strength, tensile and load resistance.

Specifications

Many experts recommend using a material such as TechnoNIKOL vapor barrier for a flat roof. And what is good about this option, what advantages does it provide? And how to carry out the work on the vapor barrier of a flat roof? Let's look into these issues.

Features of a flat roof vapor barrier

Before talking about TechnoNIKOL vapor barrier for a flat roof, it is worth knowing the features of installing such a protective layer. First you need to think about whether it is needed at all. Vapor barrier is an additional cost, so why install it?

During the operation of any dwelling, a large amount of water vapor necessarily arises in it. It appears from cooking, washing dishes with hot water, with personal hygiene. Even exhaling, a person produces a large amount of water vapor. Since it is a gas, it rises to the top.

Gradually, water vapor can seep into the thermal insulation layer and accumulate in a liquid state. And as you know, moisture leads to an increase in thermal conductivity. As a result, thermal insulation reduces its effectiveness. In addition, water settles on the elements of the truss system and other components of the roofing "pie". A humid environment is a great place for bacteria and mold to thrive. All this leads to a rapid failure of the material.

If you do not do a vapor barrier, then the roof will need repair in a couple of years. And such work is much more expensive than buying a suitable film or membrane. Therefore, it is better to spend money at the construction stage than to increase your heating costs and further quick repairs.

And what is the peculiarity of installing a vapor barrier for flat roofs. First of all, it is worth understanding the composition of the roof itself with such a design. As a rule, the roof in its composition has the following main elements:

1. Base. As such, a reinforced concrete slab or a solid wooden flooring acts. The first option is considered the most profitable, as it has a large bearing capacity and a long service life.
2. Insulation. It uses mineral wool, polystyrene (or its modern varieties) or other suitable material.
3. Waterproofing. For this, a special film or membrane is mounted. But you can use a simple thick plastic sheet.
4. Roofing material. For these purposes, a professional sheet, slate or another option is used. Very often, the area of ​​a flat roof is simply poured with a concrete screed and covered with a layer of liquid bituminous mastic or on the same bitumen basis.

And where should the TechnoNIKOL vapor barrier for a flat roof be located? This additional layer is placed between the base and the insulation. Its main task is to prevent the water vapor that has formed in the living quarters from seeping into the heat-insulating layer. Therefore, it is the vapor barrier that is laid first on the base (of course, with the exception of a possible leveling layer).

While living in the house, a large amount of water vapor is produced. Cooking, washing and other human activities are always associated with evaporation. If water vapor gets into the insulation and other components of the roofing "pie", then it can quickly ruin them. Within a year, your roof will require repair. To prevent this from happening on the base, before installing the thermal insulation, you need to lay a vapor barrier.

Materials from TechnoNIKOL

Just a couple of decades ago, roofing material was used to protect the insulation from water vapor from residential premises. This material also served as a vapor barrier (if it was laid from below) and waterproofing (when it was installed on top of the insulation). In principle, the roofing material coped with the tasks assigned to them. But he did it for a relatively short time. As a rule, roofing material serves well for 2-3 years, and then requires repair or replacement.

In some cases, this material is used today. Roofing felt is inexpensive, and to save money it is often chosen. But gradually the TechnoNIKOL vapor barrier for a flat roof is gaining more and more popularity. And there are natural explanations for this, namely, these are the advantages of this material.

The advantages of TechnoNIKOL vapor barrier for a flat roof include the following:

• high strength of the material;
• increased elasticity;
• provides good steam and water tightness;
• the material does not rot;
• high rates of fire safety;
• the material is able to withstand high mechanical loads and much more.

Vapor barrier TechnoNIKOL for a flat roof is available in several varieties. The most popular is the three-layer membrane. It is made specifically for flat structures. Each layer of such a membrane is made of polyethylene.

TechnoNIKOL vapor barrier for flat roofs

The flat roof vapor barrier film itself can perform two functions at the same time. Namely:

1. Does not pass moisture from the outside from precipitation.
2. It does not allow water vapor formed inside the room to penetrate into the heat-insulating layer.

The thickness of such a membrane is only 0.12 cm. Unlike the vapor barrier from the same company for pitched roofs, the material in question can withstand much greater mechanical loads. Three-layer vapor barrier TechnoNIKOL for a flat roof is mounted directly on concrete slabs or corrugated board. No additional preparatory work is required. It is enough to remove debris from the base and level the surface.

Also for a flat roof, you can use a reinforced version of the TechnoNIKOL vapor barrier. Such material, like the previous one, is made in a three-layer version. The base is made of durable thin strips of polyethylene. This structure constitutes the reinforced layer. Then the base is laminated on both sides. The result is a product with high vapor barrier characteristics and increased strength.

The reinforced version of the TechnoNIKOL vapor barrier for flat roofs can also be used in pitched structures. Also, this material is used to protect walls and floors from water vapor. Reinforced film is characterized by increased strength, but one factor should be taken into account when designing. This type of vapor barrier weighs several times more than a conventional three-layer membrane from this manufacturer. In addition, the cost of such a product also differs significantly upwards.

Vapor barrier TechnoNIKOL for a flat roof is a great option to protect your roof. The use of roofing material for these purposes will be cheaper, but the durability of such material leaves much to be desired. For a flat design, you need to choose a special three-layer TechnoNIKOL membrane. It is able to withstand large mechanical loads with a small thickness. For better and more durable protection, reinforced film can be used. Although this option is more expensive, it has greater strength, which significantly increases the life of the entire roofing "pie".