Bostik Cementone Tanking Slurry provides a breathable and waterproof coating for internal brickwork, concrete and stone. This tanking slurry can be used above and below ground level, and is ideal for basement walls, retaining walls, subways, tunnels, archways, concrete storage tanks and showers/wet rooms. Benefits Easy to use - mix with water and apply Two-coat system Resists positive and negative water pressure Water vapour permeable Suitable for use above and below ground level
eBay