Non-metallic building materials; worked and semi-worked materials being timber and non-metallic beams, planks, boards, panels, cladding and linings; non-metal wall panelling including internal and external wall panelling; parts of non-metal wall panelling, fittings and accessories for use therewith; tongue and groove wall panels (not of metal); and kits of non-metallic building materials including building timber, non-metal beams, non-metal planks, non-metal building boards, non-metal building panels, non-metal cladding for building, and non-metal linings for building; non-metallic lining boards; non-metallic shiplap boards; strips including decorative strips; all of the foregoing not being made from metal.