What Is Commercial Roofing? Commercial roofing refers to the materials and methods used to seal and protect the roofs of commercial structures. Unlike residential roofing, commercial roofs often cover a much larger area and are typically flat or low-sloped. These differences mean commercial roofing systems require specialized materials and installation techniques. https://foursquare.com/v/rd-construction/66a0b85ec2c0931b5e466e75