Copper is without question one of the best of all premium roofing products. It has been in use for thousands of years. It’s continually changing beauty over time has long been a favorite to those lucky enough to live under a copper roof. Delta Building Products Ltd. offers 12 oz., 16 oz. and 20 oz. copper in all their profiles whether you choose Tile, Shingle, Slate, Shake or Standing Seam. A copper roof is virtually maintenance free.