Cemcrystal is ready mixed and contains high resistance damp-proof bonding agents, waterproof additives and selected inert materials. It comes in powder form to be mixed with water before use. CEM CRYSTAL is reactive to calcium hydroxide, forming stable and insoluble compounds. CEM CRYSTAL guarantees a perfect integration to the surface creating an insoluble crystallization, which closes the capillaries osmotically. The presence of certain additives bond with the cement giving a double layer, which is impermeable to water creating a crystalline effect (osmotic healing) with time.