(quoted from post at 16:19:05 09/20/21)
(quoted from post at 15:02:22 09/20/21)
Standing seam metal roof is great. All the rest will start to leak at the screw holes in 15 yers. The holes get elongated by the expansion and contraction.
That may be your experience, but not ours.
First let me say, I DO NOT like when nails are used for steel roofing rather than screws. However, a new roof was put on this place before we bought it over 20 years ago. They used nails (yes, with the rubber washers). To date, no leaks.
I've yet to know if a leak from any roof I've installed using screws, and I haven't done a roof in about 15 years.
That said, I agree that a standing seam is superior to exposed fasteners.