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Thread: Kerdi and RedGuard?

  1. #1
    DIY Junior Member Jackie G's Avatar
    Join Date
    Nov 2011

    Default Kerdi and RedGuard?

    Hello, I am a new poster and am hoping I can get information regarding waterproofing a shower/tub remodel. I am going to use Hardi Backer and Redguard as a waterproofing membrane. Can I then use the Kerdi gaskets on the water pipe and valve protrusions when using the RedGuard? Is there a better way to waterproof those areas?


  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    It is rare when those penetrations need special sealing issues. A shower head is so high, the eschution would likely block any issues. The valves typically have a gasket behind them, and if your tilework is decent, will prevent any moisture from doing anything. But, since Redgard is designed to enable thinset to bond to it, and the Kerdi fleece bonds with thinset, it should work.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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