top of the building envelope, consisting of the supporting part and the roof, which may be flat or pitched. Some of them prefer depends largely on climatic conditions and traditions. For example, a pitched roof of old preferred a rainy Europe, and the flat - in the arid Central Asia. Flat roofs can be either from the attic, and without it (the combined coverage), and the carrier coating is most often used corrugated steel plate or concrete slab. In Russia, such roofs are widely distributed in both the residential and in the construction industry. However, we know that it was flat roofs series of panel apartment buildings due to design flaws and poor workmanship are noted for poor waterproofing and the increased heat loss.

Pitched roof supports special design, consisting of sheathing, directly supporting roofing, and roof trusses, transferring the load weight of the roof, snow, wind and other things on the walls and internal support. In a pitched roof is of considerable advantage - the possibility of the device underneath the additional loft or attic.

The device of modern roof every constructive element has certain protective functions. Roofing - the top element of the roof that protects the building from the weather, that is performing the waterproofing function. All variety of materials for roof coverings may be classified as follows: tile, slate, soft roof, metal roof.

Any roofing material has its own characteristics, which determine the scope of its application. Thus, it is extremely reliable and efficient shingles for centuries used for pitched roofs. Much less stable, but cheap and easy to install slate suitable for pitched roofs, and for roofs with minimal slope.

Soft roof - the code name designs for devices that use roll materials, polymeric membranes, mastic material, soft (bituminous) roof tiles. Modern soft roofing materials, generators on the roof surface a solid tight carpet can provide a waterproof, even on flat roofs.

Metal roofs are also used for two types of roofs: Sheet (roll) galvanized steel or corrugated sheet - a flat roof, and metal and a coating of non-ferrous metals (copper, aluminum, zinc-titanium alloy) - in pitched.

Provides a layer of roof insulation, made of special materials with low thermal conductivity.