19 Tiles, not of metal; floor tiles, not of metal; bricks; building glass; concrete; stone; cement aggregates; cement mixes; cement mortar pipes; cement mortar roofing tiles; cement mortar slates; cement posts; hydraulic cement; magnesia cement; cement bonded particle board; cement fillers for use in roofing; silica cement, namely, pozzolanic cement; slag-lime cement; portland cement; roofing cement; filling cement; wood-fiber reinforced cement boards, namely, cement excelsior boards; building materials, namely, composite panels composed primarily of nonmetal materials; construction materials, namely, fiberglass panels; construction materials, namely, exterior panels, not of metal; construction materials, namely, bonding fasteners for mounting and demounting of ceiling and wall panels, not of metal; floor panels, not of metal; glass panels for building construction purposes; multilayer panels of plastic for use in building; fencing panels, not of metal; fire-resistant boards and panels for construction, not of metal; water-resistant boards and panels for construction, not of metal; gate panels, not of metal; railings and facade panels, not of metal for construction purposes; roofing panels, not of metal; structures for mounting solar panels, not of metal; suspended ceiling systems comprising panels, not of metal; wall-mounted panel units for exhibitions, displays and partitioning, not of metal; wall panels not of metal; door frames, not of metal; greenhouse frames, not of metal; ceramic tiles for flooring and facing; asphalt roof coatings; asphalt-based coatings and sealants for use on roofs, walls and pavements; bituminous roof coatings; sealer coatings sold as an integral component of non-metal tiles, natural stone, and molded resins for construction purposes; floors, not of metal; ceiling boards of wood; ceiling panels, not of metal; construction materials, namely, non-metal bonding fasteners for mounting and demounting of ceiling and wall panels; doors and door panels, not of metal; windows and window frames for buildings, not of metal; staircases, not of metal; roofings, not of metal; roof coverings, not of metal; gates, not of metal; fences, not of metal; exterior building shutters, not of metal; roll shutters, not of metal; window shutters, not of metal; crash barriers, not of metal; refractory construction materials, not of metal; road signs, not of metal and non-luminous and non-mechanical signs of non metal; insect screens, not of metal; window screens, not of metal; Japanese sliding screens of thin paper; exterior blinds, not of metal; tombs, not of metal; prefabricated buildings, not of metal; prefabricated buildings, namely, storage sheds, not of metal; soundproof walls panels, not of metal; soundproof walls tiles, not of metal; balustrades; tar and pitch; non metal drain pipes and drain traps made of plastic; water pipes, not of metal