Offgassing of spray foams
I used Great Stuff insulating foam sealant around all the windows of our latest project, a super-insulated off-grid home. Messy business but a good tight sealant. I used the same product in the old cottage we are presently in, to seal various gaps and keep the cold winter winds out. The fumes, even though they are no longer noticeable, give me headaches and burning sinuses at night (the bedroom was one of the areas I worked on). We sleep with the window open a bit at all times, but the problem persists, two weeks later.
Question: does this spray foam, and others like it, stop offgassing eventually? We won’t be moving in for months, so time is on our side. The main culprit is diisocyanate. Since the new house has a special emphasis on excellent indoor air quality (no MDF, particleboard, carpets, alkyd paints) I will tear out all that foam if it turns out to be a potential problem. Of course, there is not much else on the market I can use instead. Does anyone have any knowledge on this? Are there foams available in small quantities which use more innocuous propellants and solvents? Thanks, guys. Paul