Delta®-Drain is comprised of a 2-layer geocomposite. The first layer is the high-density polyethylene drainage core that drains incoming water freely to the footing perimeter drain, thus preventing the build-up of hydrostatic pressure against the waterproofing layer. It also acts as a highly effective protective layer for the waterproofing material during backfill operations. The second layer is a heat-bonded PP geotextile. The rot-proof geotextile is highly water permeable and prevents clogging of the flow passages in the drainage core.
Delta®-Drain is unrolled against the foundation wall. It is typically used in conjunction with liquid or sheet-applied waterproofing. Install the top edge of the drainboard at grade level. Place the bottom edge close to the perimeter footing drain. DELTA® Accessories are available for easy fastening and termination details.