We've got one of the kit type wooden sheds I'm getting ready to turn in to a work shop. I'd like to insulate it and was thinking the foam board would be the way to go but it's definitely not cheap. Figured I'd check with the fine folks of Ingo on recommendations? If foam is the way to go so be it but if there's a more affordable alternative I'm all for it. If it makes a different I believe the walls are probable 24" OC.