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![]() ![]() ![]() J-DRain 400 Consists of a moderate-duty impermeable polymeric sheet cuspated under heat and pressure to form a high-flow dimpled drainage core. The core is then bonded to a layer of non-woven filter fabric. The filter fabric retains soil or sand particles as well as freshly placed concrete or grout, allowing filtered water to pass into the drainage core. J-DRain 420 The identical properties as J-DRain 400 with the addition of a protection sheet bonded to the backside of the cuspated core providing protection for soft membrane waterproofing systems. J-DRain 420 is compatible with waterproofing systems without the use of a protection board. Visit Installation Instructions & Details or Product Data Sheets & Specifications for more info. NES evaluated. Report No. NER-636 |
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