Metal roofing costs an average of $17,522 to install on a 2,000-square-foot roof. Steel and aluminum roofs typically cost between $3 and $12 per square foot. Metal roofs often last longer than ...
Most retaining walls cost between $10 and ... Corten steel is the most expensive material for building a retaining wall, costing an average of between $26 and $140 per square foot.