If you want to pay someone to do it for you, very expensive. If you want to do most of it yourself, not as expensive.

Also just want to throw my two cents in, you pay a roofing company 100s of dollars an hour while the guys doing the actual work with the knowledge are making nothing and most of these companies give no benefits at all.

Contracting and construction are just another industry where the guys on the top are living on the lake and the people with the know-how and work ethic are living in RVs in the winter