Bituminous waterproof membranes are one of the most common methods, as the endurance of bitumen against low and high temperatures is increased by means of modification with polymeric additives, it can be conveniently applied in hot or cold process. The modified bitumen is fixed in glass tissue or polyester felt and laminated on both-sides using polyethylene film and their variants. These membranes are perfect for waterproofing roofs, basements, below-ground structures, bridges and other structures.