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Thread: Tiling help/suggestions/recommendations..............

  1. #1
    Join Date
    Nov 2006
    Central CA

    Tiling help/suggestions/recommendations..............

    My kitchen remodel job is in a late 70's built ranch style house. The floor is post and girder construction, 1 1/8" plywood over 4" x 6" girders at 4' on center.

    The owners have their heart set on a certain 20" square tile. In my opinion, there is too much deflection in the floor for tile. I told them that I could either pull the plywood and install intermediate joists OR I would just glue and screw 3/4" plywood over the existing 1 1/8" ply, running in the opposite direction. However, if they went with the cheaper option (no extra labor charge, only plywood cost) of the ply over ply, I wouldn't guarantee any cracking in the tile or grout. The area in question is approximately 9' x 9'. My recommendation to them is to add the extra joists, of course. But, with a $500 price tag, they are a little hesitant.

    Any help, suggestion, advice you pro folks can turn my way? With the small area, will the ply over ply, totaling 1 7/8" in thickness, give enough resistance to deflection at 4' on center?

    Thanks very much for your consideration.
    Thanks, Mark.

    Custom Bonehead.

    My diet is working good. I'm down to needing just one chair now.

    "Just think how stupid the average person is, and then realize that half of them are even stupider!" --George Carlin

  2. #2
    Join Date
    Nov 2006
    Elgin, IL

    Funny you should post a thread about tiling, I'm started yesterday doing the kitchen floor. I'm only using 12x12 tile. Those 20x20 are some big pieces. I used 16x16 in our batheoom.

    Here's a website I came across when I retiled our bathroom. These guys are extremely helpful.

    Couple links on deflection.



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