Aquaseal Waterproof Tanking membrane is ideal for use on wet rooms, showers and wet zones in bathrooms when waterproofing before tiling. It forms a permanently flexible watertight membrane which is non hazardous and solvent free. Aquaseal Waterproof Tanking Membrane can be used with underfloor heating, on plasterboard, MDF, Plywood, Cementitious Boards, Blockwork, Concrete and Speciality Wet Room Boards. Aquaseal Waterproof Tanking membrane is easy to apply by brush, is quick drying and can be tiled after 12 hours. Tested to BS/EN 14891.