What’s happening, folks? I have a customer that has a cinder block shower in his basement and he wants it tiled. The question is, the cinder blocks are painted. Will the thinset adhere properly with the paint there? Or do I need to do something else? I figured it would be OK, But I always welcome 2nd opinions. Thanks
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Replies
I wouldn't trust it.
Get the paint off. Perhaps you could laminate cbu to the block somehow. PL and ?
Contact the thinset manufacturer and ask.
I would Kerdi the walls if possible.
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PL on some 1/4" Hardi-backer. cheap and probably safe. use modified thinset under the tile in case the hardi is a little wiggly.
Forrest