i sealed some of my room with the greatstuff foam insulation. Is that what you are saying is offgassing?
i used great stuff in the last stages of my sealed room build and had no probs with offgassing.
how much used and how long are the 2 factors.
you can also paint it and seal it after it cures for a day
Is "off-gassing" really even a thing?
Id like to think that a product whose fumes were enough to kill surrounding vegetation would not have made it to market in the USA.
I remember some tents that were killing plants.