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SMcCull
Lose Tile Floor
SMcCull

Hi! I have a newly built house and did 90% of the flooring myself. My problem is the ceramic tile in the kitchen. This is a high traffic area between the sink and stove area and about ten tiles became loose after the first year of installing the floor. I pulled them up and scrapped the old mortar off and reapplied the tile staying off them for 24 hours. After about 6 months they are once again loose. When first laying the tile I put durarock down and used thinset purchased at Home Depot. How can I get these tiles to stick to the floor?

Jack
Re: Lose Tile Floor
Jack

It is most likely that you have some flexing in the floor. Possibly due to to thin a sub floor.
Jack

SMcCull
Re: Loose Tile Floor
SMcCull

Thanks for the reply,the sub floor is 3/4" tongue and groove particle board with 1/2" dura rock backing board. The area in question is 4" from an outside wall , the joist's are 2x12and the center beam is 4x 10 osb{1" ply wood laminated all together. the floor does not appear to have any bounce. The thin set was a mortar mix that was mixed following directions of package. And after letting the tile set with no traffic for 24 hours I applied the grout following the directions on the bag (which was a poly mix)this was also let to set for 24 hours with no traffic.
The one thing I did not do was wet the ccb tile backing before applying the thinset. I had to chisel the thinset off the ccb (which was quite a job)it stuck to that but not the tile (the tile came up fairly easy)
Thanks again and look forward to hearing from you!

Sean M.
Re: Lose Tile Floor
Sean M.

I had a similiar problem in my last house, it turned out that the tile backer board, which was durorock was not mortared down to the subfloor, which allowed the subfloor to move. Secondly, the wrong trowel was used to install the mortar for the tile floor. This created the problem with the tile not sticking to the durorock.

Unfortunately, if one part of process fails, you will have all kinds of problems. I would be willing to bet that you didn't mortar the durorock to the subfloor, most people think that a million screws are enough, I don't personally.

If the tiles are easy to pull up it would also lead me to believe that they were not adhering for some reason, maybe mortar was mixed incorrectly or wrong trowel, or tile wasn't buttered as well as the durorock. Unfortunately, it could be any number of things that are causing your problem. :)

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