Because you need to allow for wasted materials, you may need one additional square. Metal roof materials also vary by type but can cost anywhere from $1 to $25 per square foot. Steel is the most affordable material, tin and aluminum fall somewhere in the middle and copper is easily the most expensive.

Composite roof tiles have an average cost between $7 to $14 per square foot while stainless steel can be $10 to $16 per square foot.

While this overview can give you a good idea of how to install a metal roof, the metal roofing installation process can be very complex and hazardous. A project of this scope is often best assigned to a professional installer.

Difficult to Repair: Because metal roofing is installed in large panels, the panels are more challenging to replace than single shingles.