Filter Point Mattress
Foreshore Protection's Filter Point Mattress is designed to relieve any hydrostatic uplift pressures through single weave ports sewn into the mattress. The Filter Point (F.P.) mattress is woven together at regular intervals to form Filter Points, which remain free of grout. These Filter Points allow water to permeate through the mattress to relieve hydrostatic pressures, while holding back even the finest soil particles. The inflated F.P. mattress has a dimpled finish and a Manning's 'n' between 0.025 - 0.03 is suggested.

The Filter Point Mattress is ideally suited to the protection of bridge abutments, culverts, drains, and embankment stabilisation.