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Question:

Do I really need to use cement board on my wood sub-floor to tile?

I'm ready to tile my kitchen soon. My husband and I have torn up the carpet and 2 layers of linoleum, leaving only some leftover glue from the linoleum and the wood sub floor. Do we really need to lay cement board over the wood sub floor or can we just go ahead and tile right on the wood? (FYI: it will be either ceramic or porcelain tile)

Answer:

Yes, unfortunately you will. If you tile directly onto the sub floor, the tile is likely to develop cracks. The sub-floor is probably 3/4 material, so an additional 1/2 thick cement board should work.
May 11, 2017
You probably have 3/4 subfloor of plywood. You need a total of 1-1/8 of plywood or plywood and cement board base. Go with the tile but you must have a minimum of 1-1/8 subfloor. Good luck and happy flooring.
May 11, 2017
Get the left over clue off the floor. As long as you have a sub floor you're ready to go.
May 11, 2017
I take you're in in the USA so not sure you can get an elastomeric adhesive such as BAL fast flex. If your sub floor is sound and deflection free you could use this.
May 11, 2017

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