Commercial roofing, also known as asphalt shingle roofing, is installed on commercial buildings. It is made of a metal sheet called a hot-coated steel which is coated with rubber or other materials. The metal and the underlayment are bonded together with bitumen. There are numerous benefits to this type of roofing material including: – increased protection from inclement weather – less likely for leaks and water damage due to its watertight seal – reduced maintenance required because the composite membrane will last up to 50 years It can cost significantly less than other types of roofs because you only need to replace them when they deteriorate.