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Bostik Bituminous Mastic is a multi-purpose, trowel grade material used for waterproofing, bedding, pointing, sealing and stopping leaks on roofs.
Bostik Bituminous Mastic can be used on mastic asphalt, roofing felt, corrugated iron, fibre cement, slate, lead, copper, concrete and timber.
It is immediately resistant to rainfall.
