Help! I am still in the final planning stages of my Pole Barn, and have been reading on metal roofs, and the condensation thing has really gotten me worried. I had planned to put a metal roof right on the purlins -- but to avoid the inside "rain", I think I should put up plywood first. Does anyone know if trusses 8' O.C. with 2x4 purlins on edge 24" O.C. have enough strength to handle plywood being installed on it? If so, I have started to think, gee, if I've got the plywood up, why not just put up shingles.

Cowboydoc over on TBN had talked about insulating a metal roof. Does that mean putting some corning fiberglass between the purlins? I am confused -- pictures on how this is done would be very helpful, if anyone has the answers for me.

My Pole Barn plan is getting so many daily revisions, I don't know when I'll be finalized so I can start setting my posts. [img]/forums/images/icons/crazy.gif[/img]