RIW Cementfill FC is a single component, thixotropic, polymer modified, cement based waterproof repair mortar with high adhesive properties. It incorporates the most advanced microsilica, polymer and fibre technology, curing to provide high waterproofing properties, excellent protection from acid gases, chlorides and freeze/thaw cycles as well as enhanced chemical resistance. The product is supplied as a single component system, ready for on-site mixing and use, requiring only the addition of clean water.