SOPRADRAIN™ Ecovent is a geometric patterned core drainage mat designed to eliminate hydrostatic pressure on vegetated roofs, foundation walls, retaining walls, planters, and plaza decks while protecting the waterproof membrane. SOPRADRAIN™ Ecovent comprises an extruded polymer matrix of intertwined monofilaments that are heat-welded together, forming a durable structure. One side of the mat is lined with a non-woven geotextile filter fabric designed to keep soil and concrete away from the wall, deck, and core.