Thinset under cbu [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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James Bontrager
07-31-2004, 05:28 PM
When installing cbu on the floor I have always used the same thinset under it that I use under the ceramic....either Mapai ultra flex or ultra contact. Normally my jobs are small enough that it isn't an issue. I am bidding on a fairly large install (just under a 800 ft) keep costs it fine and dandy to use the cheapest thinset under the cbu?

Always am learning something when I come here...Thanks

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jay f
07-31-2004, 06:14 PM
First check with the manufacturor of the CBU you will be installing. Some reccomend modified thin set, some don't.;)

John Bridge
07-31-2004, 06:27 PM
Jay is on the money, James. :)

Then go for the cheapest product that satisfies the manufactuer's specs. The position of the tile industry seems to be that it really doesn't matter. The thin set just fills voids -- it takes up space. :)