Application of ISOFLEX PU-510 polyurethane, coated waterproofing material on the roof of a house and its protection with the aliphatic polyurethane coating TOPCOAT-PU 720.  The system creates a single, elastic, waterproof membrane, without joints and joints.  At the same time, it is an effective waterproofing solution offering mechanical, chemical and thermal resistance, as well as resistance to solar radiation and weathering.