Tile over plywood?

Old 02-08-01, 04:58 PM
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Can I set tile for a kitchen countertop on plywood or do I need to put down plywood, then Wonderboard, then tile? What are the concerns about setting directly on the plywood?
Old 02-09-01, 01:49 PM
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Hi Steve
I believe I would put down some other type of surface like Wonderboard or Durock befoere tiling. The plywood when it gets wet will swell , and could break the bond with the tile. There are a number of reasons why not to lay on plywood but the cost of the proper underlayment is really cheap insurance.
Good Luck
Ray Vaughn
Old 02-09-01, 04:02 PM
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Hi Stevie,

One of the reasons it's not a good idea to tile over plywood is that it can move horizontally (as well as swell). Ray is correct. Install cement backer over the ply.



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