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by oliwarner
30 days ago
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It seems fairly clear if you consider a 50-100 year roof (ours is 150 years, and it's only had membrane changes in that time) against a 25 year roof. I'm sure the steel shingle will last a fair time but if the PV elements need replacing four times a century, that's not a non-trivial cost. When my PV panels die, it's just £400 a panel, four hex bolts and some quick connectors to replace it. It's no contest. |
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