17
Insulating materials; thermal insulating materials; protective coverings; insulating board and insulating boards; fabrics and felts for insulating purposes; stopping, jointing, caulking and filling materials; adhesive tapes, bands and strips; sealant compounds for joints; fillers and filling agents; jointing compounds; polyurethane and polyisocyanurate insulation for pitched roofs, flat roofs, walls and floors; vapour permeable membranes for pitched roofing, rubber, gutta-percha, gum, asbestos, mica; plastics in extruded form for use in manufacture; flexible pipes, not of metal
19
Building materials (non-metallic); roofing materials; asphalt, pitch and bitumen; building roofs; roofing felt and underlays for roofing; rooflights and parts and fittings; membraneous materials for waterproofing purposes; membranes; screed; vapour permeable membranes for pitched roofing, damp-proofing and resistance to water penetration for walls and floors with parts and fittings; preparations (not in the nature of paint) having waterproofing and protective properties, for use as coatings for roofing surfaces and other surfaces of buildings and structures; non-metallic rigid pipes for building; non-metallic transportable buildings; monuments, not of metal, ecological green roofs, liquid waterproofing