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. It dries to form a tough, black coating.
As a heavy brush coating for roof waterproofing and the resealing of existing roofs it can be applied onto mastic asphalt, roofing felt, corrugated iron, asbestos/fibre cement, slates, lead, copper and zinc.
Recommended where the threat of frost or rain prevents the use of a water based waterproofer.