[NH.Solar]

You might give Joe Wyatt a call at 455-6395. I'm not sure if he does metal roofs, but it never hurts to ask. I have an overlap seam metal roof and love it. There is one caveat though, the snow can slide off with a considerable amount of force so be sure that the area below your eaves is clear of delicate plants or objects

PS, When I installed both the roof and my barnboard siding, I used 2x 4s laid flat and 24" apart (not o.c.) as purlins. I then pressed 1.5 foam board in between for insulation and tyveked the whole shell. This may or may not work for you depending on the insulation and vapor seal already in place, but it makes a huge difference. My neighbor had his shingled roof redone with steel in this manner a few years back and reports it to have made a big difference for him as well. Overlap ribbed roofs vent fairly well