The OB1 Grey Waterproof Tanking Solution 7kg provides essential moisture protection for tiled areas. This high-performance under-tile coating prevents water ingress into common substrates such as plaster, plasterboard, and plywood, safeguarding both floor and wall materials. It is ideal for demanding wet environments like bathrooms, shower enclosures, and kitchens, and is also suitable for exterior applications. The solution offers easy application with a brush or roller, and its flexible formulation accommodates movement and vibration, ensuring long-lasting durability beneath immersed tiling. Protective Waterproof Under-Tile Coating Easy Application with Brush or Roller For Interior & Exterior Use Accommodates Movement & Vibration Suitable for Use Beneath Immersed Tiling Protective Waterproof Under-Tile Coating Easy Application with Brush or Roller For Interior & Exterior Use Accommodates Movement & Vibration Suitable for Use Beneath Immersed Tiling