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Unread 01-01-2009, 03:57 PM   #3
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Join Date: Jun 2008
Posts: 138
I just did kerdi over hardibacker and it sucks. Try to do sheetrock like all these folks say, or at worst, do durock. Hardibacker sucks the moisture out of your thinset immediately and you have to hand the kerdi within about 30 seconds - no joke. Or you get crappy coverage.
Steve, NC DIYer
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