19 Asphalt, pitch and bitumen; drainage pipes, not made of metal; pipe branches, not made of metal; alabaster; alabaster glass; bollards, not made of metal; aquarium gravel; aquarium sand; reinforcing materials for building purposes, not made of metal; asbestos mortar; asbestos cement; asphalt paving blocks; beacons, not illuminated and not made of metal; beams, not made of metal; balustrades; transportable buildings not of metal "barracks"; building wood and timber; building felt; building glass; bricks; quartz; concrete; bitumen; bituminous covering compounds for roofs; brickwork letter boxes; natural stone; busts made of stone, concrete or marble; roof coverings, not made of metal; roofs, not made of metal; roofs, not made of metal, with integrated solar cells; roofing felt; roof tiles, not made of metal; gutters, not made of metal; roof cladding boards; roof slates; bollard timber; monuments, not made of metal; wire-reinforced glass; drainage pipes, not made of metal; railway sleepers, not made of metal; paint spraying booths, not of metal; windows, not made of metal; window glass; window shutters, not made of metal; window frames, not made of metal; window glass; figures made of stone, concrete or marble; gratings, not made of metal; tile coverings, not made of metal; floors, not made of metal; scaffolding, not made of metal; cornices, not made of metal; greenhouses, not made of metal; greenhouse frames, not made of metal; plaster; glass granules for road markings; glass panes for building purposes; headstones, not made of metal; grave borders, not made of metal; gravestones, not of metal; tombs, not made of metal; grave columns, not made of metal; granite; blast furnace cement; wood fibre concrete; wooden bars for panelling; hardboard for building purposes; wood paving blocks; wooden panelling; chicken coops, not made of metal; insulating glass for building purposes; roller shutters, not made of metal; tiles for building purposes, not made of metal; prefabricated cement posts, gusset troughs, not made of metal, for roofs, for building purposes; gravel; stained-glass windows for church; gate valves for drainage pipes, not made of metal or made of plastic; gate valves, not made of metal or plastic, for water piping; cork ice rinks, not made of metal; objects of art made of stone, concrete or marble; synthetic stones; pre-fabricated summer houses; roadside barriers, not made of metal, for roads; ducts for ventilation and air conditioning, not made of metal; illuminated paving blocks; awning structures, not made of metal; marble; mortar; timber; skylights, not made of metal; framework for summer houses, not made of metal; furnace cement; pitch; posts, not made of metal; post fences, not made of metal; paving blocks, not made of metal; posts made of cement; flagstones; blocks made of cement; rocket launching platforms, not of metal; edging strips, not made of metal, for cornices; raw chalk for building purposes; pipes made of sandstone; pipes for building purposes, not made of metal; sand; silver sand; sandstone for building purposes; slate; slate powder for building purposes; slag bricks; dressed timber; chimney tops, not made of metal; chimney hoods, not made of metal; chimney pipes, not made of metal; sharp gravel; floating docks, not made of metal, to hold ships; caissons for construction work under water; signal signs, not illuminated, not mechanical and not made of metal; silos, not made of metal; plywood; diving boards, not made of metal; hoarding posts, not made of metal; statues made of stone, concrete or marble; statuettes made of stone, concrete or marble; bricks; roadside posts, not illuminated, not mechanical and not made of metal; roadside barriers, not made of metal; road marking sheets and blocks made of plastic; panelling, not made of metal; tarred tape and membranes for building purposes; tar board for building purposes; telephone boxes, not made of metal; pottery clay; gates, not made of metal; joists, not made of metal; doors, not made of metal; door leafs, not made of metal; door frames, bars, not made of metal; cladding parts for buildings, not made of metal; extensions for chimneys, not made of metal; rigid pipe elements, not made of metal; vinyl rails; bird baths, not made of metal; aviaries, not made of metal; wall cladding parts, not made of metal; water piping, not made of metal; fences, not made of metal; cement mortar; brick clay; bricks; room ceilings, not made of metal; gangways, not made of metal