Air sealing ability of canned spray foam (minimal expanding) when cut????
Minimal expansion spray foam was used to install my windows. The foam expanded towards the interior and was then cut flush with the windows. I was planning to seal the windows to the wood framing with Fentrim IS 20 from Siga Swiss. To my demise a dry wall return was riveted to the window thus preventing the use of tape on the interior.
1-Is the air sealing ability of minimally expanding spray foam reduced when it is cut and that hard finished layer is removed?
2- Would caulking this exposed spray foam be warranted? Roughly 1-2″ wide need to be covered.
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