Drain boards (sometimes referred to sheet/wall drains) are made from high compressive strength dimpled cores (perforated or not), which include a variety of attached woven or nonwoven filter fabrics that can long-term provide clogging resistance and high flow capability. These products are ideal subsurface filters and are used to provide a consistent drainage medium for in a variety of applications.
Single sided, or non-perforated drain board, directs water to flow away from either a vertical or horizontal surface such as a foundation; whereas a drain board manufactured with perforations (or a punched core) allows for double sided drainage. The double sided drain boards maintain a very high flow rate while providing a higher compressive strength for greater depths.
Typical applications include:
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