PROFA FLEX-TILE & STONE UNDERLAYMENT
A durable, lightweight tile/stone uncoupling -underlayment provides crack isolation protectionUse on concrete or plywood substrate floorsEasy-to-install, labor saving alternative to -backer board on wood substrates100% waterproof & controls vapor penetrationImpermeable polypropylene sheet lays flatWon't collapse under weight of installers' knees