Fiberglass shower pan...install using no nails?

Discussion in 'Shower & Bathtub Forum & Blog' started by DougDoingRemodel, Apr 29, 2011.

  1. DougDoingRemodel

    DougDoingRemodel New Member

    Jan 19, 2010
    Hello all! I'm remodeling my bathroom and purchased a new 60x30 shower pan from Mustee. It's white fiberglass, and I'm quite pleased with the quality of the unit for the price. One thing that has me troubled while looking at the instructions, is that there is no mention at all of securing the shower base to the wall studs. The installation instructions only mention using silicon so as to avoid squeeks. All other shower bases I've installed required that large-head nails be used to hold it in place against the studs. What's the deal here? I have the base down on the floor and it's nice and level - looks great. To nail, or not to nail? I hate to deviate from manufacturer instructions.

    Installation instructions from Mustee (PDF):

    Input? Thanks!
  2. kreemoweet

    kreemoweet In the Trades

    Sep 7, 2009
    Seattle. WA
    I'm inclined to agree with the manufacturer's recommended procedure. I've encountered
    a number of fiberglass/plastic shower receptors which were leaking due to cracks
    formed by installers driving nails through the tile flange.
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona
    You do NOT drive nails through the tile flange. You install the nails so the heads "hook over" the tile flange and hold it in place. There is no reason NOT to do it, since it gives added protection against movement.
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