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Cement Board

Posted by Carl on February 5th, 2003 09:07 PM
In reply to Yes, mortar not grout by Stacey on February 5th, 2003 10:43 AM [Go to top of thread]

Cement board is the best way to go. It is water proof, so it won't detiorate or warp when it gets wet. These conditions associated with plywood under tile contributes to tiles becoming loose or cracking, or at least grout cracking. Cement board provides a rigid surface that resists the minute deflections in the sub floor surface--which can also contribute to cracking tile or cracking grout joints.

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