Visible waterproofing of surfaces and roofs, including walkable and already tiled ones, with polyurethane systems

To waterproof the roofs of buildings − whether they are new constructions or work on previous treatments, as in the case of the presence of old bituminous sheaths − an essential characteristic to consider is the elasticity of the products to be used. In fact, large roofing surfaces undergo significant expansion and contraction movements as a result of the temperature changes to which they are constantly subjected. For roofs, therefore, the best option is to use waterproofing resins, also suitable for work on balconies, terraces and walkable roofs to be left exposed; the work is carried out by applying a double coat of the single-component polyurethane liquid membrane, with the possibility of also drowning a reinforcement mesh. The product in the water-based version is suitable for waterproofing in poorly ventilated environments and particularly suitable for schools, offices and food industries.