Sikagard®-625 ClearCoat is a water based, invisible, protective coating that is suitable for all forms of nat- ural stone, concrete and masonry. It protects against stains, discoloration, efflorescence and soiling. When applied on marble, brick, limestone and mortar joints, it will seal and reduce staining and water absorption. It can be used internally or externally without chan- ging the aesthetic look of the surface & can be used for protection of concrete and other mineral facade surfaces. D