Bostik Bituminous Mastic 2.5L Black

A multi-purpose trowel grade bitumen mastic with added fibre for reinforcement. Forms a surface skin, but the mass below remains soft to allow for moderate movement. 
Perfect for sealing and filling holes in mastic asphalt, roofing felt, corrugated iron, metal guttering and downpipes. Suitable for use in waterproofing, bedding, pointing, sealing and stopping.