6391 Ancillary items (1) 6392 Adhesives, beddings (6) 6393 Trims (5) 6397 Cleaning, repairing and renovating existing sheet, slab and panel surfacing (0) Cleaning, repairing and renovating existing sheet and slab surfacing 6398 Alteration work; removing and reconstructing sheet, slab and panel surfacing (0) Removing and reconstructing sheet and slab surfacing as part of general demolition, reconstruction, alterations and additions