Backerboard issue

Discussion in 'Remodel Forum & Blog' started by wahoo284, Feb 8, 2007.

  1. wahoo284

    wahoo284 New Member

    Joined:
    Feb 8, 2007
    I'm installing backerboard for tile in my shower and it is an old house with plaster walls. The plaster is quite a bit thicker than the backer board. Should I shim the backer board or just try to level it w/ compound. If I should level it, what should I use. Thanks in advance for any input.
     
  2. Spaceman Spiff

    Spaceman Spiff Architect

    Joined:
    Aug 31, 2004
    Occupation:
    Architect
    Location:
    Salt Lake City, Utah
    I'd use shims. They sell thick pieces of cardstock that is 1.5 inches wide by 8' long at most supply stores made just for shimming wallboard products. You can staple it in place then nail or screw the backer board on top to the studs.
     
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  4. wahoo284

    wahoo284 New Member

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    Feb 8, 2007
    Thanks for the advice
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Don't forget to install a vapor barrier behind the backerboard in those wet areas. It should run down over the tile flange of the tub or over the liner if in a shower.
     
  6. Randyj

    Randyj Master Plumber

    Joined:
    Nov 25, 2006
    Location:
    Alabama
    What has been said thus far is correct. Ideally you would want all surfaces to be on the same plane. If you choose not to bring it up to the same level then you have the option to butt tile to the edge of the plaster. If you choose to do that make sure you have adequate support behind the wall to prevent flexing at the juncture.
     
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