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  1. #1
    Join Date
    Aug 2007
    Posts
    2

    Default Wall Tile Question

    I am building out a walk-out basement. I have some cinderblock walls with drylock on the bottom 1/3, which is below grade. I want to apply tile (travertine) to this wall. I don't know if thin set can be used directly on the cinderblock and what about the area covered with drylock? Please advise.

  2. #2
    Join Date
    May 2008
    Location
    Denver and Dublin
    Posts
    63

    Default Re: Wall Tile Question

    Drylock is, by definition a moisture barrier. Nothing is meant to stick to it and it wonít. If youíre going to tile over it you need to apply a substrate such as a concrete backer board. You can screw through a concrete backer board to the masonry with tapcon or similar screws.

    You certainly can use thinset directly on Ďunsealedí cinderblock, thatís a long tradition of masons for finishing it.

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