New wall tile over tried mortar

Old 08-04-01, 09:16 AM
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Question New wall tile over dried mortar

I'm also installing new tile in a bath over dried thinset, but it is over a solid cement back. Do I need to apply a coat of mortar to smooth over this rough surface first or can I go right to the new mortar and tile? The surface is pretty rough.
Old 08-04-01, 07:53 PM
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Location: Katy (Houston area) TX USA
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You might want to knock the high spots off with a flat chisel or scraper. Then you can smooth it over with thin set or floor leveler.

I would probably just mix thin set a little on the stiff side and go to work.


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