Heavily-filled, fibre reinforced, trowel applied bitumen
Sika® Black Jack®-903 Bitumen Trowel Mastic is a trowel-applied, black, heavily-filled bituminous compound with added fibres for reinforcement. The product forms a surface skin, but the mass below remains soft to allow for moderate movement. Suitable for sealing and filling holes in mastic asphalt, roofing felt, corrugated iron, metal guttering and downpipes.
- Fast drying.
- Fibre-reinforced.
- Suitable for use with all bituminous surface coatings.
