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Community and Q&A

Canned spray foam for polyiso rigid foam

rcke2 | Posted in Energy Efficiency and Durability on

Hoping to use canned spray expanding foam for a few corners and final sealing around Rmax polyiso ….. read about some caulking not even being compatiblre with polyiso long term so i am wondering about these more chemical laden expanding foams

dont want to mess it all up right at the end 


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  1. Expert Member
    Akos | | #1

    I've never had issues with any canned foam. These don't contain any solvents like some of the caulking.

  2. Expert Member
    BILL WICHERS | | #2

    Any of the canned one-part spray foams should work fine.

    I like to use loctite’s titefoam for critical spots (places that might shift a little with thermal cycling) since I think it holds up better over time. I use great stuff in the “pro” gun for everything else because it’s a lot cheaper.


  3. Expert Member
    NICK KEENAN | | #3

    I'd love to see a roundup of all of the spray foam formulations out their and their properties.

    1. Expert Member
      BILL WICHERS | | #4

      I would too :-)

      I’ve only used a few myself. Most are similar to the usual great stuff that everyone knows. Titefoam is very noticeably different (much denser, much more even expansion, much more solid once cured), and is the only one I know of that is so different. It’s also around 3x-4x more expansive. It would be my dream air sealing product if it was both cheaper and available in a can that would work on a foam gun.


      1. lance_p | | #5

        Bill, Titefoam does come in the large gun can. I picked some up on clearance at my local HD a couple months ago, both the straw can and the gun can for $3. 9 cans for $27, can't beat it!

        1. lance_p | | #6

          Oops... I just saw you said Loctite, not LePage. I wonder if they're the same thing? They both claim to be a much denser than usual polyurethane foam. 4x more dense according to the can.

          I'm in Canada so...

          1. Expert Member
            BILL WICHERS | | #9

            Someone else a while back mentioned on here that lepage is the brand this stuff is sold under in Canada and that it is the same product. I haven’t seen it in the US in my area but now I’m going to have to look harder! If I have to, I suppose I can bring some back from Canada with me next time we visit my in-laws in Hamilton.


        2. lance_p | | #7

          Looks like it is. The safety data sheets both reference parent company Henkel Corporation and look to be carbon copies (besides the product name and IDH numbers), so LePage must be a Canadian thing? Odd that they'd offer it in a large can under one brand and not the other?

          1. Expert Member
            NICK KEENAN | | #8

            LePage is available in the northeast. It may be regional.

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