Thanks for the advice everyone, there seems to be so much conflicting information from different installers and information I can find online etc.
For those with spray foam in a shop do you still use some kind of attic gable fan to get fumes/smells out? I've been told I no longer need the fan...
I am looking at insulating my 30x40 stand alone garage shop with closed cell spray foam.
The best quote I got was:
1.25" walls and 2" ceiling at around $6500
2" walls and 3" ceiling at around $8000
Right now I am leaning towards just going with the 1.25/2 because it isn't a living space and...