The roof from the new roofing material is remarkably coping with its duties. But after a few, under the influence of sunlight, it is drying out and begins to crack. To prevent these troubles, a new roof should periodically, covered with bitumen. Usually at least once every five years. But this is a conditional figure, you need to look at the state of the roofing coating. For recovery work, bitumen mastic is prepared, warmed up to 90 degrees. The resulting mastic becomes liquid. Using a brush on a long handle, the preheated mass is applied to the roof, trying to treat the entire surface of the roof, and not just visible cracks. Processing begins with the highest point of the roof, moving smoothly into the lower part of the roof. The main thing is to try to prevent processing with individual pieces — this can violate the integrity of the new coating. If the roof has been unattended for a long time, processing must be performed twice.