I have a typical 30 x 40 pole barn with a shingle roof. We are located in Northern Michigan with winter temps typically from 0 to 25 degrees, although they sometimes dip to -20.

There are apparently a huge number of ways to insulate these structures, but I have yet to see a consensus [img]/forums/images/icons/confused.gif[/img] on the best way, or at least a preferred way. Maybe there isn't one, but I would like to here what worked or didn't work for people.

Any thoughts or input would be greatly appreciated!! [img]/forums/images/icons/smile.gif[/img]