Building boards; plasterboard; panel boards; wallboards and wall panels; non-metallic fireproof panels for use in building; building materials, namely rigid air barriers and cladding; non-metallic building materials; building paper, building sheets and linings; cladding materials; non-metallic jointing compounds for use in construction; jointing compounds for use with plasterboard; jointing products and preparations for plasterboard; jointing tape for plasterboard; consumables in this class for use with plasterboard or dry wall; filling or surface material in dry or pre mixed form; non-metallic fire resistant seals, flanges, or collars for pipes; building components predominantly non-metallic including clips, fasteners, securements, reinforcements, formers, edgers strips and trim; parts, fittings, and additives in this class for the foregoing