Shingles need to be replaced every 10-30 year depending on wear and their type. It just seems so uneconomical and such a pain.
I get that metal conducts heat more easily, but couldn’t you just let a thin layer of moss grow on your metal roof and call it a day? Even if they dry out in the summer, I doubt metal + thin layer of dirt would conduct heat more than black shingles
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Costs. Although, modern roofing codes are shifting things a little bit. The average costs for a shingle roof is getting closer to a metal one. It used to be that you could replace a shingle roof like 4 or 5 times for the cost of a metal one.
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