The MiraDRAIN 9900 is a high-strength drainage composite made up of a woven filter fabric that is bonded to the individual dimples of a molded polystyrene core to minimize fabric intrusion into the flow channels caused by overburden pressure. It serves as a filter medium, preventing the passage of particles into the core while allowing surface moisture to pass freely. Designed for use in horizontal plaza, roof deck, and between-slab drainage applications where single-sided subsurface drainage is needed, MiraDRAIN 9900 can also be used in vehicular traffic areas due to its high compressive strength, and can serve as a protection course when used in conjunction with CCW waterproofing membranes. It's woven monofilament fabric withstands high abrasion from applied overburden and prevents intrusion into the drainage core due to its low elongation characteristics. The woven fabric is better suited to receive a directly poured concrete topping than non-woven geotextile fabrics.