Protection Board is a semi rigid board containing blended bitumens and minerals reinforced with cellulose fibres, heavily compressed. Used to provide protection for waterproof membranes against mechanical damage by backfilling and foot traffic.
Uses: Bituminous Protection Board is designed for use in both horizontal and vertical applications to protect Waterproof membranes against abrasive backfill and poured concrete.
They should be butt jointed and supported during backfilling. Mastic or joint filler adhesive can be used to spot bond the board to the membrane. The joints should be staggered and also staggered over the membrane laps.