Articles of cement for building purposes; Articles of concrete for building purposes; Building elements made of concrete; Building elements of concrete; Building materials of expanded polystyrene; Building materials of expanded polystyrene in slab form; Building slabs of fibre cement; Concrete building panels; Concrete products for use in building; Constructional members of aerated concrete for use in building; Non-metallic building materials; Non-metallic building materials for construction of flood protection barriers; Non-metallic building materials for fire protection; Non-metallic building materials having a honeycomb structure; Non-metallic building materials having acoustic properties; Non-metallic building materials having insulating properties; Non-metallic building materials having sound deadening properties; Non-metallic building materials having thermal insulation properties; Non-metallic building materials in the form of panels; Non-metallic building panels; Non-metallic building partitions; Non-metallic building sections; Non-metallic building slabs; Non-metallic fire protection materials for preventing the spread of fire in buildings; Non-metallic fire protection materials for use in building; Non-metallic interior partitions for buildings; Non-metallic interlocking panels for building; Non-metallic materials for building; Non-metallic materials for building purposes; Non-metallic materials for repairing buildings; Non-metallic materials for use in building; Non-metallic materials for use in building construction; Non-metallic panels for building; Non-metallic panels for use in building; Non-metallic preformed building sections; Non-metallic sectional buildings; Non-metallic sections for use in building; Non-metallic sound absorbing structures for buildings; Partitions being non-metallic building materials; Polystyrene panels for use in building; Pre-formed insulation components (non-metallic building materials); Preformed building panels made principally of concrete