Bituminous Mastic for Roofs

Bostik Bituminous Mastic is a versatile, trowel-applied bituminous compound designed for waterproofing, stopping, bedding, pointing and sealing applications. Reinforced with fibres for added strength, it effectively seals and fills holes, gaps, and cracks in a wide range of substrates, including mastic asphalt, roofing felt, corrugated iron, cast iron, fibre cement, slate, lead, copper, zinc, concrete and timber. Its high cohesive strength ensures excellent adhesion to most roofing substrates.

Upon curing, Bituminous Mastic forms a flexible, black compound that remains soft and pliable for an extended period. This flexibility allows the product to flex with changes in temperatures, maintaining integrity.