Acrylic Shower Pan Installation (MAAX)

Discussion in 'Shower & Bathtub Forum & Blog' started by cwindingland, Mar 2, 2012.

  1. cwindingland

    cwindingland New Member

    Mar 2, 2012
    Saint Michael, MN
    My wife picked out a new corner shower for our unfinished bathroom downstairs. It will be sitting on a concrete slab. The acrylic shell is fairly thin and has a type of molded styrofoam underneath for support. The installation instructions just say to make sure the surface is flat and screw through the flanges where they meet the wall on the two sides. When I set it in place, it feels fairly solid but I was wondering if it should be set in something like a layer of thinset or concrete resurfacer? Thanks, in advance, for your feedback. I appreciate it.
  2. Hackney plumbing

    Hackney plumbing Homeowner

    Jan 6, 2010
    I would install it just as the directions direct.
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  4. LLigetfa

    LLigetfa DIYer, not in the trades

    Feb 6, 2011
    NW Ontario, Canada
    I had one of their low end units that was thin and flimsy. The styrofoam deteriorated and the pan cracked from the flexing. Consider returning it if you still can and get one of their higher end models that are much better built.
  5. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    If the pan sits flat to the floor, that is enough
    Something under the pan is only used if the floor is out of level, or there is some rocking.
  6. johnfrwhipple

    johnfrwhipple BATHROOM DESIGN & BUILD for both Canada & the US

    Jul 20, 2009
    Design Work World Wide: Bathrooms Vancouver Area
    North Vancouver, BC
    I would feel better about something biting between the two layers.

    I have found that Grani Rapid bites very well to styrofoam but this is a premium thin-set and on the pricy side.

    If you plan on using a liquid membrane and tile walls you could maybe prime the floor with some of the liquid and use some silicone. ???

    Not sure I would just lay it out with nothing else - regardless of what the instructions state.

    Do you have a link to the install guide?

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