All Weather Roofing Roof Compound Bitumen Waterproof Roof Coating 2.5/5/25L Description: A solvent‐borne, bituminous compound of a high build consistency containing a small percentage of fibrous filler. Dries to a tough, black coating. Uses As a heavy brush coating for roof waterproofing and the resealing of existing roofs of mastic asphalt, roofing felt, corrugated iron and fibre/cement slates, lead, copper and zinc. Recommended where the threat of frost or rain precludes the use of an emulsion. Preparation All surfaces must be structurally sound, clean, dry and free from surface contaminants such as grease, rust and dirt. If necessary, remove any organic growth i.e. lichen, with a fungicidal wash such as Bond It MOULD STOP. If the surface is still dusty .