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What’s the difference?

Connie Lambert | Posted in General Questions on

I read on the internet…..Finally, there is a foam in place,cementitious insulation Air Krete that is made from…Yes,Retrofoam made by Polymaster.
My question The salesman told me that Retrofoam excreted gases! I could get Retrofoam cheaper than Air Krete but that it wasn’t Green!
Was I lied to?

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  1. David Meiland | | #1

    I'm not sure I understand the question. Are you asking if AirKrete and Retrofoam are the same product, or if they are substantially similar, or if one or both off-gas after installation?

    As far as "green" goes, there isn't much in the way of insulation that I would call "green" aside from cellulose. Other than that, it all has a lot of embodied energy, is often made from petrochemicals, manufactured by processes that release a lot of greenhouse gas, etc.

  2. GBA Editor
    Martin Holladay | | #2

    There is no definition for the word "green."

  3. Michael Gold | | #3

    Several products can be blown in, including these two. Foam prices vary widely, with the most insulating foams being more expensive than what you're considering. Retrofoam's a medium-density polymer foam. Air Krete's cement-based. Yes you'd want to ask Retrofoam the outgassing question before selecting. Air Krete isn't available where I am but I would have liked the option partly bec yes, supposedly inert. You'd want to ask Air Krete about shrinkage and expected service life before selecting.

    My opinion, get at least 3 bids.

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