Waterproof Tanking Kit containing:-Waterproof Tanking Primer for use before applying Tanking Membrane and Tanking Tape.Waterproof Tanking Membrane which forms a permanently flexible watertight membrane, applied by brush, two coats. Waterproof Tanking tape, a self adhesive joint and corner sealing tape.Waterproof Tanking Drain Mat, a self adhesive butyl backed fleece, capable of coping with movement around the drain outlet. All you need to waterproof 7.5 square metres