SteveE
Songster
This might be old but 2 cents... Insulation baffles won't really solve anything here. Their purpose is make an "air tunnel" between insulation and the underside of a roof. Since there's no ceiling insulation they would serve no purpose. And besides all that moisture still has to get out. If you haven't solved it yet, I'd probably remove the metal, add a treated or painted plywood deck, tar paper over that, and put the metal back down. Cut vents at the high side and trim out the exterior on the high side with something to protect the vents from the weather but still let them exhaust. I probably would not add any foam to the outside of the plywood without thinking a lot about R values and possible condensation trapping if you don't add enough.