19 Beams, not of metal; balustrades, not of metal; concrete; bitumen; joists, not of metal; bitumen paper for building; stained-glass windows; Asphalt felt for building; geotextiles; gypsum for use as building materials; plaster; chimney pots, not of metal; prefabricated ready to assemble houses, not of metal; chimney shafts, not of metal; jalousies, not of metal; framework, not of metal, for building, including framework, not of metal, for installation of stretch ceilings; bricks; pillars, not of metal, for building; brackets, not of metal, for building; Transportable buildings, not of metal; buildings, transportable, not of metal; roofing, not of metal; building timber; reinforcing materials, not of metal, for building; bituminous products for building, namely, Bituminous coatings for roofing; tar; pitch; building materials, not of metal, namely, reinforcing materials not of metal for building purposes; refractory construction materials, not of metal;Non-metal mosaic tiles for building; mouldings, not of metal, for cornices; mouldings, not of metal, for building, namely, non-metal architectural mouldings; flashing, not of metal, for building; roof flashing, not of metal; duckboards, not of metal; wall claddings, not of metal, for building; Coatings being building materials, namely, asphalt roof coatings and fireproof cement coatings; laths, not of metal; wall panels, not of metal, for building; props, not of metal in the nature of reinforcing materials not of metal for building purposes; wainscotting, not of metal; building panels, not of metal; partitions, not of metal for building; tarred gutter strip miters, not of metal for building; planks of wood for building; wall tiles, not of metal; floor tiles, not of metal; tiles, not of metal, for building; cement slabs; tile floorings, not of metal; slabs, not of metal, for building; roof coverings, not of metal; roofing, not of metal, incorporating photovoltaic cells; cladding, not of metal, for building; Ceramic tiles for lining, not of metal, for building; floors, not of metal; ceilings, not of metal, including stretch ceilings, not of metal; agglomerated cork for building; grout; vinyl siding; building glass; insulating glass for building; enamelled glass, for building; Non-metal hips for roofing; ducts, not of metal, for ventilating and air-conditioning installations; rigid pipes, not of metal, for building; angle irons, not of metal; cement; pantiles, not of metal; Non-metal pantiles; roofing slates; concrete building elements, namely, blocks of concrete