Redgard for tiled shower? Waterproof...

Discussion in 'Shower & Bathtub Forum & Blog' started by worrywell, Feb 24, 2008.

  1. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    John Bridge needed to Hydro Ban his Kerdi-Board project he featured in his new eBook!

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  2. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    John Bridge also spot set all large tiles in Kerdi Builds ??? Why

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  3. jim mills

    jim mills New Member

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    Any opinion on doing a kerdi pan and redgarding the walls of a shower?
  4. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  5. jim mills

    jim mills New Member

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    Never used ardex products, but I see you recommending them frequently. I'll have to see if they are available locally. I'd rather trowel on a cement based product than spread that goopy red stuff anyway.
  6. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  7. dhagin

    dhagin builder:anti-builder

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    It's done regularly with success. The main advantage, IMO, is that one need not wait days til the mud bed cures out before applying the liquid waterproofing. The main disadvantage is that as it's a hybrid system, it's not recommended for a DIYer as each install may need to be detailed differently to achieve success. If you're not familiar with either products, it's best to pick one and use it for the whole shower. :)
  8. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  9. jim mills

    jim mills New Member

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    The reason for the question is that I hate kerdi overlap. Especially when using small tiles.
  10. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    With small tiles you would want to skim the wall out and get it perfect.

    What colour grout you planning?
  11. jim mills

    jim mills New Member

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    Still in the planning phases of my next project. Hardly at grout selection yet. Why you ask? Dang...closest Ardex dealer is 2 hours away.
  12. dhagin

    dhagin builder:anti-builder

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    Why not just Redgard the whole thing Jim? Finishing this one up tomorrow. :)

    IMG_4760.jpg
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  13. jim mills

    jim mills New Member

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    Dana, I just feel much more confident in having a sheet membrane on the floor. I've done just one hydroban shower & it still comes to mind every time my phone rings. Just paranoid I guess...
  14. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Red Guard to thin

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  15. dhagin

    dhagin builder:anti-builder

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    I understand the trepidation with liquids. Sounds like you're a pro, and if so, suggest checking out the many successful installs over at a site that's dedicated to tile. These guys know their stuff, they don't just play contractor, they are tile contractors. :)

    http://www.johnbridge.com/vbulletin/forumdisplay.php?f=4
  16. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  17. dhagin

    dhagin builder:anti-builder

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    Not sure if I mentioned that over at the dedicated tile pro's site, johnbridge.com, it's not just one person you're dealing with. It's a wealth of information from tile pro's around North America and the world. Of course, we rarely agree on what is proper, but we try to remain respectful and friendly even when we disagree.

    There's more than one way to skin a cat, and over there we discuss many of the hybrid systems out there. There's pros and cons to all, and we've beaten some of these systems to death over the years. One other thing I'll mention... on a trip to Custom Building Products research facility last year, many of the pro's over there met some of the engineers and scientists who assure that their products meet or exceed industry and tile pro's standards. Liquid waterproofing systems have evolved greatly from the old 9235 days, and CBP's work with Redgard has changed it to a very competitive product with HydroBan. If installed properly, there's no worries with using a quality liquid as a shower floor waterproofing - of course this means prepped, installed, and maintained properly. :)
  18. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  19. dhagin

    dhagin builder:anti-builder

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    Remember Jim, when using Redgard, or any liquid membrane system, follow the manufacturers installation instructions for getting proper coverage. With Redgard it's easy to verify and CBP gives several good options for getting there. If you don't have a wet film gauge, simply follow CBP's instructions on choosing and using a proper trowel, proper technique, proper number of coats, and away you go. You'll need multiple coats of course, just like any liquid.

    In the photos above, you can see the first wall coat after the corners were pre-treated. All this according to the manufacturers installation instruction. This particular shower was constructed in a high humidity environment, so typical dry times were extended. Again, no worries, just follow the manufacturers installation instructions for dry/cure times & coloration, and you'll be fine.

    It's always a good idea to flood test, whether it's required by the AHJ (that's the code folks) or not. We adhere strictly to this and test all showers whether it's required or not by code or contract. ... I've had this conversation with a number of code folks over the years, and some have no idea what you're getting on about. Especially for a DIYer or someone unfamiliar with the products, testing is a good benchmark for your floor waterproofing install, whether it's required or not. Of course, a flood test is only 1 small step in the successful completion of a proper shower and a passed flood test is no assurance that the shower is properly constructed. :)
  20. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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