Black Jack Bitumen Trowel Mastic is a trowel applied black heavily filled bituminous compound with added fibres for re-enforcement, used primarily for patching holes in roofs and bituminous coatings. The product forms a surface skin, but the mass below remains soft to allow for moderate movement.

BENEFITS
- Fast drying
- Suitable for use with all bituminous surface coatings
- Remains flexible for long periods after application

AREAS FOR USE
Mainly used for:
- Waterproofing, stopping, bedding, bonding and sealing
- Adheres to/fills holes in: mastic asphalt, roofing felt, corrugated iron, cast iron, fibre cement, slates, lead, copper, zinc, concrete and timber.