PROVA FLEX 3.28 Ft. W x 16.5 Ft. L Tile & Stone Underlayment, 54 Sq. Ft./Roll

A lightweight underlayment designed for tile installations over wood and concrete substrates. ProVa-Flex uncouples the floor covering from the substrate and prevents the transfer of stresses to the tiled surface. Thus, a crack caused by movement in the substrate is neutralized. Cracks in the substrate are bridged and not transferred to the floor covering.