Gadestroyer74
Banned
You will want closed cell foam when spraying the under side of the roof.. everything in the walls can be open cell. Keep this in mind spend as much money as as you can afford and then spend alittle more. Get a high seer rated hvac and get double or triple pane windows if you can . Why ? Look at the temps and break down in ozone layers. You’re not building for tomorrow your building for the future. The climate is changing and it’s getting hotter. Plan for that now !