ARDEX CL 3 is a rapid hardening self levelling compound, walkable after approximately 3 – 4 hours and ready designed for use after 48 hours(@ 5mm thinckness). Grey powder with special cements, high quality synthetic resins, selected fillers and other special additives. AREAS of APPLICATION: Dry, internal, cementitious sub-floors.Filling, smoothing and levelling of concrete slabs and cementitious screeds prior to application of floor coverings such as vinyl, linoleum, carpet, ceramic tiles and floating timber floors. Smoothing surfaces in residential & commercial applications such as shopping centres, schools, hospitals, homes, etc.