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Underslab Vapor Barrier

Florprufe® 120
With Grace's Advanced Bond Technology™, Florprufe® is the industry's first integrally bonded vapor barrier. Florprufe forms a unique seal to the underside of concrete slabs-on-grade, creating a permanent barrier that minimizes the risk of water vapor from the ground reaching moisture-sensitive floor finishes. Florprufe stops excess water vapor that can result in warping, loss of adhesion, staining, mold and other major defects that require costly repairs or replacement. It complies with the latest American Concrete Institute (ACI) recommendations* that slabs with vapor-sensitive coverings should always have the vapor barrier in direct contact with the slab.

Comprising a highly durable polyolefin sheet and a specially developed non-tacky adhesive coating, Florprufe is laid onto prepared slabs-on-grade. Once the concrete is poured, an integral seal develops between the liquid concrete and the membrane.

Florprufe exceeds all requirements for ASTM E 1745, Class A Vapor Barriers.

The Bond Makes the Difference!

* Addendum to ACI 302, 1R, 2001
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