The need for an insulating layer for the roofing system is due to the fact that it is necessary to protect the structure from the effects of moisture and water vapor, which rises from the inside of the room. To do this, use special vapor barrier and waterproofing films. Such materials are called underlying, since they are included in the structure of the roofing “pie”, and layers of finishing are protected from above.
The penetration of moisture into the roof system occurs during rains and foggy weather, while the substance begins to condenses on the inside, when the temperature is different in its indicators. Due to diffusion and convection, moisture and steam penetrate into the inner layers of the roof, which negatively affects its functional properties. Moisture damages the insulation that is no longer restored. So, all the new real estate Gelendzhik involves reliable and high -quality isolation from moisture and steam, so customers may not worry about the well -being of their apartments or cottages. It is appropriate to use special films based on polyethylene or polypropylene, which are equipped with reinforcement in the form of fabric or grid. It is convenient to use films with microperforation, which already performs the function of waterproofing. On the perforated surface, the hole is directed towards the roof, so that the moisture seeps from the inside out and lingers from the reverse side.
At the expense of the perforated structure of the material, it is possible to increase the vapor permeability of the material, which is why there is a need for a ventilation gap, which is made using a crate installed between a layer of insulation and waterproofing.