EPS - Filter Matt for Double-Layered Mattress

Filter Matt is a double-layered mattress with each layer joined to the other at fixed intervals to form filter points. These areas remain free of grout and allow the transfer of water through the matt. This process eliminates the build up of hydrostatic pressures that would otherwise cause instability to the mattress and the structure it is protecting. The spacing of these filter areas can be varied to increase the thickness and weight of the inflated mattress, with the external forces anticipated on each particular project determining the thickness of mattress required.