building materials, not of metal; building materials of plastic material; acoustic building materials (other than for insulation); construction materials, not of metal; building materials made of fibre cement; non-metallic building materials having thermal insulation properties; coatings (building materials); non-metallic building materials for the construction of office interiors; non-metallic building materials for the covering of walls; non-metallic building materials in the form of boards; laminated building materials (non-metallic); non-metallic building materials in strip form; non-metallic building materials having sound deadening properties; flame retardant building materials; non-metallic building materials in the form of panels; building materials for coating walls (other than paint); non-metallic building materials in sheet form; non-metallic building materials for use in cladding; non-metallic building materials having insulating properties; non-metallic building materials having acoustic properties; non-metallic building materials