My main concern is condisation on the metal purlins with using the rigid foam. May just use the prodex stuff and wrap the entire inside under the purlins. just not sure of how good the insulating power will be.
Just had a 30x45x12 metal building installed and they wrapped entirely with the bubble reflective radiant barrier stuff then installed sheet metal. Looking at installing some kind of insulation to this for heating and cooling the building with a 3 ton gree ductless unit when needed. I was...