[Class : 19] Grouts, Waterproof Coatings Includes Waterproof Coatings (Cementitious), Waterproof Membrane For Roofing, Floor And Walls, Waterproof Bituminous, Waterproof Liquids For Concrete. Construction Materials (Not Of Metal); Building Materials (Non Metallic); Non Metallic Rigid Pipes For Building; Asphalt; Pitch And Bitumen; Clay; Plaster For Use In Building, Gypsum ...