re: Spray foam insulation

First of all I’ve seen at least 2 times that experienced contractors ( not foam guys, but people that have been in construction for years ) didn’t spray it correctly and the foam caught on fire. It’s a chemical reaction.
And second it’s a science on how a house should be insulated, if done incorrectly it can and will cause mold and mildew issues..
That’s just my two cents, if you do decide to do it yourself do as much research as you can.