The roof should be understood as the upper part of the structure, the main purpose of which is to protect the building from the effects of atmospheric phenomena.
The roof consists of two elements – the roof and the bearing structures that are designed to transfer the roof weight to the walls of the structure. Such structures include rafters, arches, wooden farms, flooring.
Depending on the design of the roof, the most popular are one-, two-, four-sided (holly), attic, attic, unrequite.
The combined roof is such a type of structure when the upper part is a roof, and the lower serves as a ceiling.
Roof material uses various. It can be asbestos cement, metal, roofing material, brick, only.
Depending on the slope of the roof, there are flat and pitched with a slope, while the slope should be more than 3 degrees.