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Old 04-25-2019, 12:12 PM   #5686 (permalink)
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I'd say if it isn't going to last at least 30 years and cost no more than about 3x an asphalt shingle roof, there's no point.

The primary purpose would be to keep out the elements. Generating electricity is secondary to that goal.

Finally, high output is not necessary if the entire roof is going to be a solar collector. The north side will hardly make any electricity anyhow.
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