Products / Hydrotech Gardendrain

Gardendrain is Hydrotech's drainage, aeration and water retention element for its Garden Roof assemblies. Gardendrain GR10 and GR25 are rolls (48 inches by 50 feet) of a recycled polypropylene core bonded between a fleece top fabric and a non-woven bottom fabric, with cores about 0.40 and 1.0 inch thick. Gardendrain GR30 and GR50 are 4 by 6 foot molded recycled polyethylene panels, 1 1/4 and 2 inches high, with retention cups on top, drainage channels on both sides and aeration holes, and their cups are filled with LiteTop expanded aggregate. GR10 is for extensive assemblies, GR50 for intensive assemblies. The data sheets report flow rate by ASTM D4716 and compressive strength by ASTM D1621.