Below Grade Drainage Systems
ABP Advanced Drain® .400
ABP Advanced Drain® .400 is a 0.400 inch thick drainage composite consisting of waffle pattern matrix with bidirectional geometric drainage channels backed with a nonwoven filter fabric designed to eliminate hydrostatic pressure from behind below grade foundation walls, retaining walls, planters and plaza decks.
The product is produced from an extruded polymer matrix of tangled randomly oriented monofilaments. The polymer matrix is then shaped into a series of truncated square pyramids with bidirectional porous channels designed to allow flow in all directions, and then attached (heat bonded) to a polyester nonwoven filter fabric designed to prevent soil from entering the matrix of the system while providing ample flow of water.