In the discussion of metal roofing (see Metal Roofing: A Buying Guide), the word "metal" covers a lot of ground. Several metals are used for roofing materials: steel, stainless steel, aluminum, copper and zinc alloys. Each has different properties that affect durability, price, and appearance.

Steel, used for most metal roofing, is heavier and sturdier than aluminum. Manufacturers have settled on a number of durable co (more…)