BLM Building Paper Grade A1F Roll 25 x 1m (L x W) Brown, made from reinforced bitumen bonded building paper with wet strength kraft paper. Paper is manufactured according to the technical requirements of BS 1521 Class A. The rolls will protect the underside of the lead from alkalis in concrete, stone and screed. The product should be laid in adjacent sheets across the fall of a roof and overlapped which must be fitted over the whole substrate area.
- Resistant to chemicals found in plaster and cement
- Renewable making it environmental friendly