I just had Amish friends put a steel roof on my house and cover 42 feet of the front deck. I left the last 10 feet of deck for a sun deck. I had a little storm damage but not enough to claim on my insurance, but it was time to replace the roof. I don't think I will ever use shingles again. This is a 40 yr roof and should far outlive me. It was a 1500 sg. ft. roof plus the uprights, rafters, and purlins cost was $7400