Bostik Flexible Tanking System is a complete tanking and waterproofing kit that gives you everything you need to waterproof both walls and floors prior to tiling showers, wet rooms, wet zones and other areas susceptible to water and excessive moisture. It is ideal for use on plasterboard, MDF, plywood, cementitious boards, blockwork, concrete and specialist wet room boards. This kit includes a 9kg container of sealant and 5 metres of tanking tape. The ready-to-use sealant is simple to apply with a roller or brush. It is low-odour and quick drying.