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Product Data Sheet


PRECON is a composite sheet membrane comprised of a non-woven fabric, elastomeric membrane, and W. R. MEADOWS’ exclusive, patented plasmatic core (U.S. Patent No. 7,179,761). The plasmatic core is a seven-layer matrix designed for toughness and provides the lowest water vapor transmission (WVT) rating on the market. Once concrete is poured against PRECON and the concrete cures, a mechanical bond forms that secures the concrete to the membrane.

PRECON is used as a blindside waterproofing membrane in vertical applications where access to the positive side is limited. The membrane can also be used for horizontal applications for underslab waterproofing and vaporproofing.

Features & Benefits

  • Provides a waterproof seal between the membrane and poured concrete wall.
  • Helps prevent moisture migration into the structure.
  • Acts as a barrier against termites.
  • Reduces methane and radon gas intrusion.

4′ (1.2 m) wide x 50′ (15.2 m) long rolls, one roll per carton.

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