Building materials (non-metallic); building and construction materials (non-metallic); cement, concrete and aggregates; slabs, panels, boards, tiles; framework; formwork and shuttering; pilings, bricks, mortar; articles of mortar for construction purposes; filling products (coatings, cements, mortars); smoothing products (non-metallic building materials for filling, smoothing, packing and decoration); fillers; plaster for packing; smooth plaster (non-metallic building materials for filling, smoothing, packing and decoration); concrete building products; concrete blocks, foundations; building formwork and void forms; non-metallic components for use in concrete foundations and floors; building components of plastic and moulded plastic; plastic and/or polystyrene in situ moulds and/or void forms for concrete flooring and foundations; profiles of plastic for building; plastic moulds for use with concrete; plastic voids for use with concrete; non-metallic building materials in the form of plastic extrusions; building materials of polystyrene; parts and accessories for the foregoing