Prova-Flex is a durable tile underlayment that provides crack isolation protection on cement slabs and is an easy-to-install, labor-saving alternative to backerboard on wood substrates.

The underlayment features a patented Shear Stress Control system with non-woven anchoring fleece to neutralize stress caused by movement in the substrate. With its lightweight functionality and the top scrim layer that provides the ultimate locking mechanism for mortar, you can fill the studs with mortar in just one pass of your trowel and get the job done even faster.

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