Drybase Tanking Slurry is a cementitious, ready-mixed waterproofing compound formulated for use on concrete and masonry surfaces subject to water ingress. Designed for both active and passive water pressure, it provides durable and reliable waterproofing for below-ground structures, basements, retaining walls and foundations.Once mixed with clean water and applied by brush, trowel or spray, the slurry hardens to form a seamless hydrophobic barrier. It bonds strongly to both horizontal and vertical surfaces and remains vapour-permeable after curing. The hardened coating resists frost, de-icing salts and carbonation, and has been tested to withstand up to 7 bar of water pressure. Drybase Tanking Slurry complies with EN 1504-3 and is approved for use in contact with drinking water.This versatile coating is supplied as a grey powder in 25 kg bags. It is mixed with 4.5 to 6 litres of water per bag using a mechanical mixer, giving approximately 45 minutes of working time at 20°C. Two coats are recommended, with the second applied while the first remains damp.