The exact size of the overlap in each case is determined by the slope of the roof. On top of the film, a counter is nailed with a minimum section of its bars of forty -five millimeters and an interval between bars of ten to fifteen centimeters. Next is the installation of the crate. On the skate, it should be provided for the blow (rupture of the film) five centimeters between the axis of the skate and the edge of the film. In places of installation of pipes and antennas, the film on the roof is cut and glued to the edges to the closest bars of the crate using self -adhesive bilateral tape or tape. In the presence of attic windows, the device of the waterproofing film is made according to the recommendations of manufacturers of these windows.