In the case of mechanical fastening cover is spread on the floor, his paintings are glued together and then fastened to around the perimeter of the roof. In this case, shrinkage and other slip of the building fabric will not feel any stress and will remain intact. Blades welded to the membrane with hot air by means of special welding machines. Merge voduPoskolku flat roof has an angle of 2-5%, the diversion of rain water is no problem. However, to prevent flooding in case of heavy rainfall, it is necessary to arrange a drain. It can be informal and organized.
In the latter case, organize both internal and external drainage. For the device internal drainage entire roof surface is divided into sections in such a way that one had to riser 150-200 m2 (Provided that the pitch is not less than 2%). If the area of the roof less make a riser. In the field gradient at the surface of the roof have gutters funnels that are equipped with special baskets, catching different garbage. Usually they put at the center of the roof, and gutters located within the building. So that the water near the crater would not freeze, and freely poured into the tube, next to her on an area of 1 m2 with cable systems carry heating roof.
And for year-round domestic guttering, chimneys have them (the length) in the heated zone. Although flat roofs are usually associated with internal drainage systems, as an alternative to them use and external drains. They are used to divert water for unheated buildings and annexes, having a single slope roof. Inside the need to install the cable to the winter they would not freeze water.