Osb [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile

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Ronaldk
04-12-2011, 09:16 AM
I have a small, 8ft x 5ft, room that has osb on top of 3/4 tongue groove floor in a old house and i want to know if it is all right to put tile on top of the osb? It is solid.

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bbcamp
04-12-2011, 10:10 AM
Yes, it is, but you need some sort of underlayment. None of the thinset manufacturers that I'm aware of permit direct bonding to OSB. 3 sheets of backerboard should do it.