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jyl - they're pretty common as residential roofs in the boonies in the NE. In the Adirondaks, nearly every house up in "heavy snow country" has a metal roof. They don't allow the snow to accumulate - it slides right off.
I also think someon in the, "How to earn some extra cash," thread mentioned they made a lot of money painting metal roofs. I think they were in AZ or So. Cali. Wherever it was, it was a temperate climate.
I can't answer your lightning question with certainty, but in the NE, almost every metal roofed house had lightning rods. That also could be due to there being a lot more thunder/lightning storms there compared to the PNW.
I never thought about it interfering w/ cell phones, but my current house has aluminum siding, and we occasionally have reception issues. We're also across from the airport tower, so that my play into our issues as well.
Oh - and they sound great in the rain!
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Josh
85 M491 Coupe - "Fat Bastard"
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