I'm doing site prep now for the concrete slab and barntype wood/mechanic shop...Shops at ground level, and loft will be craft room, intertainment and grand-kids area. Using gambrel style metal roof, do I need to use sheathing (OSB, plywood) or can I just run the purlins across the rafters, and attach metal ? It'll be insulated as well, so I guess my fear is condensation...sweat and such. Here in Nashville area we get seasonal weather not too extreme either direction. And I'ld like not to pay the current premium prices if I don't really need the material. Four hurricanes have greatly jacked up wood and metal prices. Any suggestions are greatly appreciated. Until then, I'll be playin in the dirt!!!
roy