Backer Board Under Sheet Products?

Discussion in 'Shower & Bathtub Forum & Blog' started by elgato, Jan 26, 2007.

  1. elgato

    elgato New Member

    Messages:
    43
    Location:
    Phoenix, AZ
    I have stripped the bathroom down to the studs. I plan to install a Swanstone shower base with Swanstone or other sheet type surround.

    Is there any reason to use backer board products with this type of surround or is green sheet rock adequate?

    Expense and labor aside, what is best for this application?

    Thank You
    Tom
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,270
    Location:
    New England
    Personally, I'd put in cement board. If it leaks at the seams, the greenboard is only marginally better than plain drywall. Both contain gypsum, which mold loves, whereas cbu doesn't support mold on its own, it takes something else contaminating it to support mold.
  3. elgato

    elgato New Member

    Messages:
    43
    Location:
    Phoenix, AZ
    Thanks.

    A lot of people recommend structolite for the mud base under the shower pan.
    Is the gypsum content a concern?

    Tom
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,270
    Location:
    New England
    If it never gets wet, it isn't a problem...
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