The most highly economical and versatile version of metal roofing is steel roofing. Metal roofing made of steel comes in many different sizes, and these steel roofing systems all paint to adhere to them quite well and are usually quite durable. A lot of these roofing systems come in galvanized steel which has added protection against premature degradation. Aluminum Roofing is quite soft. Using Aluminum means it is more prone to damage, dings, and scratches. Based on the current market aluminum is also more expensive than steel. Aluminum does have a much slower corrosion rate vs. steel. This corrosion resistance factor keeps the roof leak free longer even if it incurs damage, scratches, dings, and dents.