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white_wulff 11-06-2012 06:22 PM

Thinset on Fake Stone
Hi all,

Searched for this for ages online before posting a question here. I want to set a few Culture Stone on Durock on an interior wall and I've read here - most notably from Tscarborough - that one can use a thin set to fix them on an interior application.

My question, which doesn't seem to be answered is how thick to put on that thin set - 1/4" trowel and butter the backs? Bigger toothed trowel? Those cultured stones are pretty uneven things so you're going to need some thickness to the thin set which may well get pricey.


oh'mike 11-06-2012 06:35 PM

Have you looked at any instructions from the fake stone maker?

I would think that back buttering would be needed---I've never set that product----

Thinset is about the cheapest stick um available----be glad they don't all for a bucket mastic--that would be expensive.

Tscarborough 11-07-2012 08:37 PM

You need enough, backbuttered, so that when you press hard, you barely feel the fake stone touch if at all. You may need to knock off the high points on the back. Do 100% coverage on the back of the stone, then run your trowel down the middle to provide some room to compress the mortar to allow for setting the stone.

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