Cladding, not of metal, for building; non-metallic building materials for use in cladding; non-metallic cladding board; non-metallic cladding for buildings; non-metallic cladding for facades; non-metallic cladding for walls; non-metallic cladding materials; non-metallic cladding panels; non-metallic cladding panels for walls; non-metallic cladding sheets; non-metallic panels for outer cladding on buildings; non-metallic wall claddings; wall claddings, not of metal, for building