There are lots of "metal" roofs.
There are different materials and different installation arrangements.

I live in Charleston South Carolina where standing seam metal roofs are
common.
Mine was badly compromised during Hurricane Hugo.
At a guess, it was installin in the late '30s and was blown off in the
late '80s.
I replaced it with terne coated stainless steel standing seam and do
not expect to deal with it again.
This is a high end material and an expensive installation and worth
every penny, since the house is 35 feet high at the eaves.

TB