An all-inclusive waterproofing system designed to waterproof the walls, underside, and adjacent areas of a standard shower tray and enclosure. This all-in-one kit features a 1200 x 750mm Nicobond Tanking Sheet engineered for rapid installation beneath a standard shower tray. When integrated with the paint on waterproof membrane for walls and the self-adhesive internal corner and jointing tape for wall-to-floor transitions, it forms a robust, continuous waterproofing system—effectively preventing water ingress and protecting the substrate and adjacent room from moisture damage.