As of 2015, the average cost for standing seam roofing panels made of aluminum is $9 to $11 per square foot, while interlocking aluminum shingles range from $7 to $9 per square foot. Compared to other roofing materials, aluminum is among the least expensive.
Complicated aluminum roofing styles can cost up to $15 a square foot or more, as of 2015. The final cost depends on the form of aluminum, the installation details and the size of the home. A standard-size home is anywhere from $11,900 to $24,000 for an aluminum roof being installed professionally. Steel is about the same as aluminum, though copper and other metal roofing materials are often more expensive.
Costs also vary based on the slope of the roof, since this determines the difficulty influences labor costs.