Settting option for preformed shower pan

Discussion in 'Shower & bathtub Forum & Blog' started by msrazmataz, Mar 22, 2010.

  1. msrazmataz

    msrazmataz New Member

    Messages:
    1
    Location:
    Indiana
    I have purchased a pre-formed shower pan for a stand alone shower. It has a formed grid base on the bottom. Someone mentioned that there is a new foam type product to set such bases in versus using the old morter bed process.

    Does anyone know if this true and if so the name/type of product and where it can be purchased?

    Thanks so much for any information.

    Kind regards,
    msrazmataz
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,806
    Location:
    New England
    If your floor is not perfectly flat and level (and so is the pan!), mortar is still your best choice.
  3. xdeaconx

    xdeaconx New Member

    Messages:
    28
    Location:
    chicago
    why mortar as opposed to concrete? Is there ever a time to use one over the other?
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,806
    Location:
    New England
    Concrete will sag and run, mortar won't (if you use the right stuff) and will stay where you need it while is cures.
  5. Basement_Lurker

    Basement_Lurker One who lurks

    Messages:
    668
    Location:
    Victoria, BC
    foam will compress over time, while a properly set mortar bed will provide solid support!
  6. xdeaconx

    xdeaconx New Member

    Messages:
    28
    Location:
    chicago
    That makes perfect sense. What's the "right stuff" as far as mortar is concerned? Should it ever be used to finish off the leveling of the acrylic base?
  7. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,806
    Location:
    New England
    Many people use deck mud, this is a mostly sand mix with enough portland cement to hold it together. It is closer to wet beach sand than what you think of as concrete that you'd make a sidewalk out of. Another substance that is used is Structolite (sp?).
  8. xdeaconx

    xdeaconx New Member

    Messages:
    28
    Location:
    chicago
    hmm, deck mud, I think i remember something about that over at john birdges website. Sounds like something I'd have to mix myself. Maybe i can find a recipe online somewhere.

    EDIT
    I found the site talking about deck mud, in case anyone else want's to see what it's all about
    http://www.johnbridge.com/how-to/deck-mud/
    Last edited: Mar 27, 2010
  9. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,806
    Location:
    New England
    You can buy sand mix in bags. It is fine for setting a shower base. It's a little rich (too much cement) for a shower pan construction for some (too much cement makes it stickier and not as porous), but that means it will 'smush' easier than the mix with a higher sand content. Put a piece of tar paper or some plastic on the floor before setting it to prevent the wood from sucking too much moisture out.
  10. xdeaconx

    xdeaconx New Member

    Messages:
    28
    Location:
    chicago
    got it jada, i'll look for the sand, portand mix.

    thanks
  11. Winslow

    Winslow Plumber

    Messages:
    450
    Location:
    Hawaii
    If you use foam you need to put somthing in the pan to weigh it down untli the foam finishes expanding and cures, otherwise it will push up on the shower pan.
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