After the construction of the walls, the construction of the no less important part of the building begins, namely the roof and the construction of the roof is part. You can not treat the construction of the roof frivolously, since your comfort in this building depends on the quality of the roof, since there are problems as a frequent due to a negligent attitude to the construction of the roof: leakage of the roof during rains, the formation of large icicles in the winter and during strong winds can tear off the roof coating or the entire roof!