Best Hardening Agent To Support Shower Base

Home Forums Public Forums General Plumbing Best Hardening Agent To Support Shower Base

Viewing 4 reply threads
  • Author
    Posts
    • #276998
      MasterPlumbers
      Keymaster

      Hello
      I’m installing a fiberglass (36″x36″) shower pan on a concrete floor. The manufacturers directions suggest using 20lbs of joint compound. I tried it (set the base in 20lbs of joint compound) but found 1) it wasn’t nearly enough to support the entire base and 2) it seemed to have high and low spots. So, I decided to pull it up and start over. Does anyone have a suggestion as to the best hardening agent to use?

      Thanks
      Jim

    • #295206
      Retired plbg1
      Participant

      I never did put anything under bases I set, You could measure the high points in base and put that much sand on fl. and wiggle it down till it touches fl. You could pour the hollow spots in base with cement and let set a couple days and turn it up and set it.



      Art retired plbg

    • #295207
      DUNBAR
      Participant

      Mortar.

      Every tub, shower pan or jacuzzi I have set rests on a bed of mortar and my customers love it. Makes the unit solid as a rock.

    • #295208
      nicktheplumber
      Participant


      In reply to message posted by DUNBAR:
      Mortar.


      I agree with Dunbar. Get everything ready to go (drian connection, etc.) and lay the acrylic or fiberglass pan on a fairly stiff but still workable bed of mortar that has been carefully leveled and framed out on the subfloor, and you will wind up with a solid installation.

      “Joint compound” may be easy to use right out of the can, but mortar really works best.

      NtP

    • #295209
      maintenance-guy
      Participant

      I’ve always laid a bed of mortar on a plastic sheet and laid another layer of plastic over it. It doesn’t have to be neat or fancy but makes removing the thing so much easier years later.

Viewing 4 reply threads
  • You must be logged in to reply to this topic.

Pin It on Pinterest

Share This