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4' x 50'

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J-Drain 400 Product Data Sheet

Performs a multi-faceted role by providing protection for waterproofing systems and managing subsurface water around building foundations. Soil backfill is retained while allowing water to pass into the drainage system providing hydrostatic relief. Collected water is then conveyed to J-Drain SWD-6 or SWD 12 collection systems.

Consists of a impermeable polypropylene sheet cuspated under heat and pressure to form a high flow dimpled drainage core. The core is then bonded to a layer of nonwoven 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.


  • Foundation Walls
  • Retaining Walls
  • Planters & Roof Gardens
  • Bridge Abutments
  • Under Slabs

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