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> And are in the most difficult place for maintenance and cleaning, so those things will be neglected.

They don't need much service. And it's not like you need a helicopter to get there

> And you need to replace the roof? Now what?

That's one in 50 years event

Like yeah, if you have good amount of space that is otherwise unused go ahead, but realistically someone will want that space for a house or business, not a bunch of glassy squares, those can go on roof.




50 years? Where, Europe? With tile Iā€™m guessing because in North America most people have asphalt roofs that need to be replaced every 15 to 20.


Or, in a utility solar farm, where they work well.




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