Grout mortar Ceresit CE40Aquastatic – watertight, flexible, grout mortar for porcelaine, ceramic, glass, natural stones and marble tiles 1 to 10 mm. Ceresit CE 40Aquastatic grout with SilicaActive technology is especially suited for grouting porcelaine as well as other other types of ceramic, glass, mosaic, natural stone tiles and marble (non-sensitive to discoloration). High abraision resistance and crack-resistance make it very long lasting and in combination with the TripleProtection it is effectivly protected against fungi and mould.