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Old 05-17-2012, 07:18 PM   #1
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Bath floor - concrete board?


Remodeling my bath. I have 3/4" sub floor under 9/16" osb. I was going to put tar paper down over that then 1/2" concrete board then tile. I'm wondering, do I need the concrete board? I can pull up the osb, tar paper under that and then tile over the osb. I imagine putting concrete board down is best but is it necessary? Thanks

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Old 05-17-2012, 07:51 PM   #2
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Bath floor - concrete board?


This thread may answer your questions.

OSB + Plywood = solid base for tiling?

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Old 05-17-2012, 08:19 PM   #3
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Bath floor - concrete board?


No need for half inch cement board--1/4" is fine---no tar paper--set the cement board into a bed of thinset--then nail or screw the board down---1/4 x1/4 inch trowel--
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Old 05-18-2012, 01:19 AM   #4
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Bath floor - concrete board?


Yep, very helpful. Thanks
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