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  1. GBA Editor
    Martin Holladay | | #1

    W Will,
    I notice that you are double-posting your question. My answer is the same as it was when you posted the question before:
    https://www.greenbuildingadvisor.com/community/forum/green-products-and-materials/14537/out-gassing-bad-stuff-spray-foam-insulation#comment-28704

    I wouldn't hesitate to use one-component spray foam to seal the gap between window frames and the window rough opening. I've never heard of lingering odor problems with one-component foam.

    Don't overfill the gap or you can cause the window frames to bow inward, making the sash bind in the frame.

  2. Torsten Hansen | | #2

    I have no data on outgassing but we use Great Stuff every day of the week and have never noticed any issues. The cans are foolproof as long as you get the right one - look for "window and door foam" in blue cans.

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