19 Building materials, not of metal; transportable buildings or structures, not of metal; asbestos cement; asphalt; beams, not of metal; swimming pools [structures], not of metal; concrete; joists, not of metal; building paper; binding agents for making briquettes; binding material for road repair; geotextiles; gypsum [building material]; plaster; clay; potters' clay; earth for bricks; roofing shingles; gravel; prefabricated houses [kits], not of metal; parquet floor boards; floating floor boards, not of metal; wood for making household utensils; veneer wood; mouldable wood; chimney shafts, not of metal; roof gutters, not of metal; street gutters, not of metal; road signs, non-luminous and non-mechanical, not of metal; non-luminous and non-mechanical signs, not of metal; limestone; lime; works of stonemasonry; works of art of stone, concrete or marble; rubble; artificial stone; building stone; framework, not of metal, for building; quartz; bricks; firebricks; water-pipe valves, not of metal or plastic; cement posts; pillars, not of metal, for building; chimney cowls, not of metal; brackets, not of metal, for building; buildings, not of metal; buildings, transportable, not of metal; stringers [parts of staircases], not of metal; silica [quartz]; roofing, not of metal; roofing, not of metal, incorporating photovoltaic cells; staircases, not of metal; road marking sheets and strips of synthetic material; reinforcing materials, not of metal, for building; bituminous products for building; road coating materials; materials for making and coating roads; fireclay; pitch; refractory construction materials, not of metal; masts [poles], not of metal; raw chalk; calcareous marl; mosaics for building; porches [structures], not of metal; roof flashing, not of metal; perches; duckboards, not of metal; wall claddings, not of metal, for building; shuttering, not of metal, for concrete; acoustic panels, not of metal; wainscotting, not of metal; building panels, not of metal; parquet flooring; partitions, not of metal; sand, except foundry sand; sandstone for building; tarred strips for building; planks of wood for building; wall tiles, not of metal; floor tiles, not of metal; tiles, not of metal, for building; paving slabs, not of metal; cement slabs; tile floorings, not of metal; slabs, not of metal, for building; scaffolding, not of metal; armour-plating, not of metal; asphalt paving; wood paving; paving blocks, not of metal; fireproof cement coatings; bituminous coatings for roofing; roof coverings, not of metal; wooden floor boards; cladding, not of metal, for building; linings, not of metal, for building; fireplace mantles, not of metal; porphyry [stone]; ceilings, not of metal; mortar for building; asbestos mortar; tanks of masonry; statues of stone, concrete or marble; figurines of stone, concrete or marble; penstock pipes, not of metal; water-pipes, not of metal; gutter pipes, not of metal; ducts, not of metal, for ventilating and air-conditioning installations; drain pipes, not of metal; chimneys, not of metal; rigid pipes, not of metal, for building; sandstone pipes; plywood; foundry moulds, not of metal; rock crystal; cement; cement for blast furnaces; cement for furnaces; magnesia cement; pantiles, not of metal; roofing tiles, not of metal; slate; roofing slates; slag [building material]; slag stone; railway sleepers, not of metal; wood veneers; clinker ballast; concrete building elements