help with tub backboard for tileing

Discussion in 'Shower & Bathtub Forum & Blog' started by sheepies666, Oct 5, 2004.

  1. sheepies666

    sheepies666 New Member

    Joined:
    Oct 5, 2004
    This weekend a friend of the family installed a new tub for us and put new backboard around it. Unfortunately, he didn't do the greatest job with it and now I need to know how to fix it!
    The backboard sticks out from the wall 1/4" at the top (which it always did) and continues down straight until about a foot from the top of the tub. At which point it rapidly tapers down to nothing!
    We need a relatively flat surface for tileing, and also to make it look finished. My question...how do I add an extra 1/4" thickness to the area? It has to be able to hold up ceramic tiles :eek:
    Any help???
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    You can put some thinset mortar on it up to 1/4" thick, let it harden, then put on the tile. Regular thinset shouldn't be greater than 1/4" in a single layer (although you can layer it if you let it set inbetween). The tub should have a tile flange on it, if it doesn't , you may need to do some other things to make sure you don't have a moisture problem. The backerboard (this is cement backer board he put up?) should not come all the way to the top of the tub - there should be a small gap.

    I suggest you ask your questions over on www.johnbridge.com you'll get more info on tiling there. Some of the same people frequent this place, but that is specifically on tiling.
     
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  4. sheepies666

    sheepies666 New Member

    Joined:
    Oct 5, 2004
    Thanks a million! I've gone over and joined that board and gotten some excellent advice :) I really appreciate the help
     
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