Commercial Roofing differs from Residential Roofing in many ways. Keep in mind, just because a building is used for commercial purposes does not mean that it will qualify as a commercial roofing job. It is the size of the roof and type of roofing that is used that defines a commercial roof. Allied Roofing and Sheet Metal, Inc. has been serving the roofing needs of Broward County, Florida for many years. We pride ourselves in developing long-term relationships with our customers, listening to their needs, and then suggesting the proper course of action—be it preventative maintenance, roof repair or replacement.