Rainwater installations of plastic material; non-metallic guttering for the collection of rainwater; non-metallic guttering for the dispersal of rainwater; non-metallic rain shelters; non-metallic rainwater traps and covers; rain gutters, not of metal; rain traps, not of metal; rainwater drainage apparatus of plastic materials; rainwater hoppers of non-metallic materials; rainwater installations of plastic material; bituminous products in sheet form for waterproofing roof surfaces; bituminous products in the form of membranes for waterproofing; building boards made from wood and waterproof resins; caissons for construction work under water; coating compositions having waterproofing properties (building materials, other than paints or oils); coating preparations having water repellent properties (building materials); coatings to protect concrete from water (building materials, other than paints or oils); coatings to protect masonry building walls from water (building materials, other than paints or oils); coatings to protect stone from water (building materials, other than paints or oils); elastomer waterproof coating preparations (not paints); elastomer waterproof preparations for preserving asbestos roofs (not paint); elastomer waterproof preparations for the protection of asbestos roofs (not paint); masonry water reservoirs; masonry water tanks; non-metallic building materials for waterproofing purposes; non-metallic building materials having waterproofing properties; non-metallic conduits for water discharge; non-metallic conduits for water distribution; non-metallic flashings for waterproofing buildings; non- metallic guttering for the collection of waste water; non- metallic guttering for the dispersal of waste water; non- metallic insulated pipes for water; non-metallic membranes for waterproofing; non-metallic sub soil drain sheets for preventing water infiltration; non-metallic vented underlays for roof'Yaterproofing systems; non-metallic water fittings incorporating flow control (parts for water pipes); non-metallic water pipes (other than parts of sanitary installations); non-metallic waterproofing boards; non-metallic waterproofing materials (not in the nature of paint); non-metallic waterproofing membranes; non-metallic waterproofing membranes for use in building; plastic pipes (rigid) for water; polymeric bitumen emulsion for waterproofing buildings; potable water reservoirs of non-metallic materials; preparations for use as waterproofing coatings on the surfaces of buildings (other than paints); preparations for use as waterproofing coatings on the surfaces of structures (other than paints); protective coatings for repelling water (building materials); sealing materials (chemical) for water permeable rock formations; sealing materials (other than chemical) for water permeable garbage disposal sites; sealing materials (other than chemical) for water permeable soil; water control valves (not of metal or plastic); water regulating valves (not of metal or plastic) for water pipes; water reservoirs of brick; water reservoirs of concrete; water resistant mortars; water storage towers, not of metal; water tanks of brick; water tanks of concrete; water-pipe valves, riot of metal or plastic; water-pipes, not of metal; waterproof bituminous membranes reinforced with glass fibre; waterproof coatings (cementitious); waterproof membranes for use as ground liners for lakes; waterproof membranes for use as ground liners for landfill sites; waterproof membranes for use as ground liners for ponds; waterproof paper for use in building; waterproofed cardboard for use in building; waterproofed paper for use in building; waterproofing membranes for application by spraying