PRECON is blind-side and under-slab membrane that offers both waterproofing and vapor-proofing protection. Not only does the product block water, but it also inhibits vapor intrusion, creating an environmentally friendly indoor environment. Its dual functions make it a great fit for all waterproofing and vapor-proofing needs.

The productis used as a blind-side membrane in vertical applications where access to the positive side is limited. The membrane can also be used for horizontal applications for under-slab waterproofing and vapor-proofing. It is a composite sheet membrane comprised of a non-woven fabric, elastomeric membrane, and W. R. MEADOWS’ exclusive, patented plasmatic core.

“PRECON reduces methane and radon gas intrusion, creates a barrier against termites, helps prevent moisture migration into structures, and provides a waterproof seal between membrane and poured concrete,” notes Matthew Price, president of W. R. Meadows Inc.

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 the product andthe concrete cures, a mechanical bond forms that secures the concrete to the membrane.

PRECON’s fabric bonds tenaciously to poured concrete walls to create solid waterproofing protection. Superior to traditional clay-type products, it features a greater seal to stop water in its tracks. We also have a low temperature version available.

For more information on PRECON, including samples, data sheet, installation procedures, guide specs, and MSDS, visit