Vapor barrier roof - when condensation becomes an enemy ?

Why is it important to make a vapor barrier of the roof?

In these areas of the house like the kitchen and bathroom, vaporization occurs continuously during all climatic periods of the year, but in other areas it increases its intensity in the autumn-winter period (the house "breathes").In the absence of a vapor barrier is in the process of intensive accumulation of steam and settling on the insulation in the form of frost on the part of the roof.

If equipped with waterproofing layer, the insulation between it and the possible accumulation of a large amount of such a "coat" of frost.With the advent of the entire heat frost turning into water drained downward.From this increases the humidity ceilings and upper parts of the walls.If a lot of water, wet the whole house design.

Clearly, all this leads to an increase in thermal conductivity of the insulation material, the appearance of mold, mildew, rot and the insulation design elements, a general deterioration of living conditions in such a house.Therefore, to prevent such a threat must be a vapor barrier of the roof unit.You can use the special reinforced film for vapor barrier membranes based on bitumen sprayed liquid rubber, roofing material, multiple layers of plastic film and so forth.

What materials can protect the roof from condensation?

The choice of material is determined by the operating conditions.For example, a wooden house need a reinforced water vapor retarder film.The important point is the choice of devices and the need for a continuous layer of a vapor barrier.Therefore, if the material is sprayed operate "automatically", in the case of roll films or membranes where they carefully glued joints (e.g., adhesive tape).

Experts say that the universal material for the device is no such isolation.Even the steam, the walls and the roof is done by various means.Izomaterialov Selection is made according to a variety of conditions.Among the advantages of the materials on the basis of bitumen should call their flexibility and efficiency of use.Further, even if perforation occurred when mounting such a layer, the properties of bitumens save encircle piercing object pairs can not get over this film.

at the junction of such a film to the structural elements at home (chimney pipe, insulation joints, walls, etc.) Measures should be taken to the maximum seal seam.

This may be applied even crimp clamps, etc.Suffice it a versatile material, which is carried out insulation and waterproofing of the roof, considered to films and membranes Izospan.They well protect the insulation from the external and internal moisture.

basic rules laying vapor barrier

In order to reliably protect the thermal insulation mat from the exterior and interior moisture, maintaining its low thermal conductivity, when the roofing Water and steam device is performed according to certain rules.When installing the waterproofing layer, you need to ensure that air gaps with insulation not less than three millimeters.

This is done to resulting from changes in temperature residual condensate can evaporate.Since the outer layer is made ventilation heat insulator. in isolation device, as already mentioned, it is necessary to prevent the penetration of steam into the material of the thermal protection.

One of the conditions will be laying the films with overlapping not less than twenty centimeters, with a mandatory sizing of these areas.When the film laying need to pay attention to the side, where it will be in contact with the insulator.As a rule, one of the parties has a glossy surface.It is this surface is the outside.And the other side is in contact with a heater.In this case, the film is considered to be laid correctly.