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Old 03-27-2012, 10:32 AM   #1
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blue board behind shower


I recently had a contractor drywall our basement, and he put blueboard in entire bathroom (with tub/shower). I didn't know any better at the time so signed off on it, and just now realizing that we really should have done cement board with plastic sheeting behind it for the shower. So looking for some advice on what to do from here. Nothing is installed, it's still just an empty room with the tub and primed walls. Can't linger on this too long since we have a baby due in a few weeks and bathroom really needs to be done by then. Don't really have the budget to spend $300+ to wrap it all in Kerdi at this point. The bathroom will be for guests, so shower will be used no more than 10 times a month. I'll be installing a tile surround once the walls are finalized. Here are the options I'm considering, and welcome any input or other recommendations:

- Go with it as is and cross my fingers.
- Paint on something like HydroBan (since Redgard isn't allowed on gypsum).
- Rip it out to studs where the surround will be and just plastic sheet and cement board that area (the most work).

Thanks in advance

Rich

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Old 03-27-2012, 11:10 AM   #2
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blue board behind shower


Yeah, you reallly have three options.
1) kerdi over the blueboard.
2) tear it out and use CBU with a waterproofing layer.
3) Install a prefab shower rather than tile.

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Old 03-27-2012, 12:28 PM   #3
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looks like i can get 54 sq ft of kerdi for $90, and that should cover the area. That sounds like the best bet
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Old 03-27-2012, 11:26 PM   #4
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blue board behind shower


What happened to the Hydro-ban idea?
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Old 03-28-2012, 11:27 AM   #5
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blue board behind shower


I have done alot of tile work but never heard of this Kerdi. What is it?
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Old 03-28-2012, 12:13 PM   #6
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blue board behind shower


I just finished putting up Kerdi in a shower. It's pretty easy to put up. Kerdi is approved for use on drywall. That's the way I'd go. Then it would be right; no compromise.
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Old 03-28-2012, 09:01 PM   #7
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Quote:
Originally Posted by brucem View Post
I have done alot of tile work but never heard of this Kerdi. What is it?
http://www.schluter.com/8_1_kerdi.aspx

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