Tiling to plywood [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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03-06-2007, 11:40 PM
I am getting ready to do my first kerdi shower and possibly (considering) using ditra on the bathroom floor.

If I were to use modified thinset to glue my tile directly onto plywood on the face of the whirlpool tub surround, would I be eternally damned to the fires of bad tiling hell, or would it be OK? The previous installer had actually used mastic and it had held up (so far). And I was just going to use thinset to glue the wall tiles around the tub surround to sheetrock. So I thought why couldn't I use modified thinset to glue to the tub face? If not, should/could I use ditra?
I have done tons of backsplashes just using mastic on sheetrock. What's the dif if I use thinset on sheetrock AND vertical ply?

I suppose I should use either ditra or cbu to the tub deck?


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03-07-2007, 01:23 AM
Hi Figaro, either use CBU on the face of the tub or drywall with Kerdi on it. You don't want to tile directly to ply. Use thinset too in wet locales.

03-07-2007, 08:01 PM
I'm with Musky, I wouldn't tile directly to the plywood. Sheetrock, Kerdi or CBU will work better. :)