Roof construction

Roofing consists of:
- Inclined planes (ramps);
- Sloping edges;
- Horizontal edges and ridges.
The intersection angle of the incoming rays are called a valley and valley sheet, and beyond the building horizontally or inclined roof edge - cornice and gable overhangs, respectively.
Atmospheric water with rays going in wall trenches from which enters the inlet funnel, then drain pipes, and finally, into the storm drains.
Elements of the roof can be installed in both the longitudinal and transverse direction, connecting them to the castle (sheets roofing steel) or overlap (all other types of coatings).
According to the construction of the roof are:
- Single layer of sheet steel, asbestos tiles and sheets (IN, B), from the tape seam pressed tiles;
- Multilayer of roll material, ribbon tiles, tesa, shingles, wood shavings and shingles. The number of layers in multi-layer roofs ranges from 2 to 5, depending on the material, they are more labor intensive and less efficient. If the multilayer roofing each subsequent layer is placed in the transverse direction, it must cover the joint elements of the underlying layer. If he is placed in the longitudinal direction, it completely covers the underlying layer overlap with the established state standard.
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