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