Bostik Mastic is a multi-purpose trowel grade material for waterproofing, stopping, bedding, pointing, and sealing.  This product can be applied to mastic asphalt, roofing felt, corrugated iron, fibre cement, slates, lead, copper, zinc, concrete and timber. Bostik Bituminous Mastic dries to a soft flexible coating that remains soft and pliable for a long time after application.

Key features:

• 1.2kg
• Fibre re-enforced mastic which fills, seals and repairs
• Immediately resistant to rainfall
• Highly resistant to weathering
• Dries to soft flexible coating