Bostik Black Roofing waterproofer, 5L Metal container - B&Q for all your home and garden supplies and advice on all the latest DIY trends
Bostik Brushable Waterproofer for roofs is a general purpose, solvent-based, bituminous waterproofing compound, suitable for use on all common roofing surfaces. It contains a small percentage of fibrous filler to help bridge cracks and dries to form a tough, black coating.