Non-metallic building materials; membranes for building in this class including waterproofing membranes; flooring underlay in this class; building slabs; flooring, including floorboards; tiles, including wall and floor tiles; wall claddings, wall linings; non-metallic rigid pipes for building; asphalt, pitch and bitumen, including asphalt, pitch and bituminous coatings in this class for waterproofing; coatings in this class