Polyflow® 18 Drainage Mat is two-part, molded sheet drainage geocomposite consisting of a formed impermeable polymeric core covered on one side with woven filter fabric. The fabric allows water to pass into the drain core while restricting the movement of soil particles which might clog the core. The core allows the water to flow to designated drainage exits. Polyflow 18 is designed for horizontal applications. Compressive strength is 21,000 psf.

Polyflow 18 offers our maximum-flow performance for critical applications. It is our premier, highest-flow option for demanding commercial/architectural conditions such as deep foundations and plaza decks.