Good points about humidity—I learned that lesson the hard way. My folks switched to open-cell foam a few years back, and while it definitely stopped the itchiness, we ended up dealing with moisture issues later... ventilation tweaks were needed after the fact. Did your installer bring that up?
"we ended up dealing with moisture issues later... ventilation tweaks were needed after the fact."
Yeah, similar experience here. Had a project where we switched to open-cell foam to get rid of the itchy fiberglass mess, but didn't anticipate the humidity build-up. Ended up needing to retrofit some ridge vents and soffit openings—wasn't cheap either. Curious if anyone else found a better workaround, because ventilation seems to be the hidden catch with spray foam insulation.
Had a similar issue on a recent build—thought we were being smart by ditching fiberglass for spray foam, but ended up chasing humidity problems for months. We eventually added some passive vents and even a small attic fan to help move air around. It worked, but yeah, wasn't exactly budget-friendly.
One thing I've wondered about since then is whether closed-cell foam might've been a better choice in humid climates. I've heard it acts as more of a vapor barrier compared to open-cell, but haven't personally tried it yet. Has anyone here gone that route and noticed less moisture trouble? Seems like ventilation always ends up being the tricky part no matter what insulation you pick...
Went through something similar myself. Closed-cell foam definitely helped us manage humidity better—acts as a solid vapor barrier and doesn't trap moisture nearly as much as open-cell. But you're right, ventilation always ends up being the tricky part no matter what insulation you pick. We still had to add passive vents eventually, but overall it felt like less of an uphill battle compared to previous setups. Sounds like you're headed in the right direction though... hang in there!
"We still had to add passive vents eventually, but overall it felt like less of an uphill battle compared to previous setups."
Interesting... did adding passive vents noticeably bump up your overall costs? I've been debating foam vs. fiberglass myself—curious how the budget shakes out long-term with extra ventilation included.