12:12PM | 12/01/06
Member Since: 11/30/06
1 lifetime posts
I'm going to attempt to tile my kitchen floor. There is no basement, just a crawlspace, and it is not insulated, yet. What are my options, and your recommendations, for preparation to prevent movement and cracking? What are the types of membrane materials that are best? Anything about the new stuff from Schluter? I've been told to layer thinset, membrane, Hardibacker, thinset again, and then mortar and tile, but I'd like to keep the transition to the dining room as thin as possible. As my name implies, I am a tile rookie. What would be the best book to use to bone up on this project?


04:40PM | 12/01/06
Member Since: 07/03/05
283 lifetime posts
None of the tile trade associations or union tile setting schools will support setting tile over hardwood. I wish I could put my hands on a recent article written by Dave Gobis from the Ceramic Tile Education Foundation. He touched on the problems that are caused by doing this. In a nut shell you will be encapsulating the hardwood, and the moisture from below cant rise up through the wood to escape causing the boards to cup and warp. This in turn will generate cracks in the grout and tile as the cement board does not act as a buffer to minimize that type of movement up into the tile. Your best course of action is to remove the hardwood and replace it with 3/4" plywood (not CDX rated though, BCX would be best), then the cement board in the thinset and then the tile. That is assuming your floor joists are 16" OC. If height transition is your overiding concern then give up on the idea of ceramic tile. You cant compromise on subfloor thickness under ceramic without running the risk of having your tile floor go bad in a hurry.


06:36PM | 12/01/06
Member Since: 10/28/05
312 lifetime posts
the only recommended product for installing over a wood strip/slat subfloor would be using schluter ditra or another load distibution and uncoupling membrane that approves and warranties its use for that appplication.

It isnt recommended to use a fiber rock board or cement board over strip/slat wood subflooring.



There are two ways to do any job. The right way and the wrong way. Do it right everytime.


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