+ Reply to Thread
Results 1 to 6 of 6

Hybrid View

  1. #1
    Join Date
    Nov 2011
    Posts
    3

    Question Using spray foam on steel bathtub

    We are renovating our bathroom and are about to install a new porcelain on steel bathtub. We were thinking about spraying around the sides of the tub with expanding foam insulation for support and heat retention. My concern is how much the foam expands and could that distort and crack the tub. It seems there would be plenty of ways for the foam to expand in other directions. ALSO we were thinking about doing this before we install the tub so we can trim off excess and minimize pressure problems. Any thoughts or experience with this?

  2. #2
    Join Date
    Mar 2008
    Location
    nova scotia, canada
    Posts
    1,522

    Default Re: Using spray foam on steel bathtub

    your better off not risking it. put down some rigid foam in side the tub shell. you can use a small can of spray foam to adhere the rigid though
    fire up the saw and make some dust

  3. #3
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,084

    Default Re: Using spray foam on steel bathtub

    If you apply foam BEFORE you install the tub, I doubt that you could fit the tub in place.

    If the tub is sitting next to an exterior wall, just insulate the wall to code. Don't forget to install an access door for future plumbing repairs.

  4. #4
    Join Date
    Nov 2011
    Posts
    3

    Default Re: Using spray foam on steel bathtub

    Thanks for the input. I did put a layer of foam on the tub to help damper the sound and we will stuff it with fiberglass insulation after we install it (Access through open walls). I don't think there will be a fit problem as the foam is not protruding beyond the lip of the tub... if there is, I guess I'll have to sc**** it off. Thank you again.

  5. #5
    Join Date
    Feb 2012
    Posts
    92

    Default Re: Using spray foam on steel bathtub

    Should be fine steel is pretty durable I have done this with fiberglass tubs I did use window and door though to not over expand I am a plumber and if you were worried like I said use window and door it doesn't over expand but sounds like you got it!

  6. #6
    Join Date
    Jan 2010
    Location
    Cape Cod
    Posts
    24

    Default Re: Using spray foam on steel bathtub

    expanding foam should not distort a steel tub, but to be sure take (3) 5 gal buckets, fill them with water to the top. put them next to each other in the tub, then inject foam under tub. the weight of the water buckets will prevent any distortion of tub. I do this in fiberglass tubs allot, works fine.

    best of luck, Patrick from Resurface Spe******t of cape cod. tub refinishing experts

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •