Drythane is a solvent free, 2K Polyurethane Coating system that is non-flammable and does not emit obnoxious smells. It has been designed specifically as a high-performance Waterproofing Membrane. Drythane provides lifelong protection to concrete and other masonry. Once coated, the surface is completely impervious to water. You can make green roofs with lawns, water fountains, swimming pools etc. This durable Floor Waterproofing Membrane has a design life of 20 years and more.