This product is crap. I just tore out an entire shower installation with marble tile. the thinset never dried. Any latexbased thinset that is recommended for use will not dry when applied to Denshield. Think about it, it's latex applied to vinyl. This will never work, and if I had thought about it instead of listening to salespeople at the home improvement stores, I would have realized this. i am now considering taking legal actions against Ga Pacific to re-coupe the costs of replacing $700 worth of tile and materials + labor.