Your roof is an investment, and like any investment, you want to do what you can to protect its value. You wouldn't neglect your car, would you? Proper maintenance of your commercial/flat roof is important because it helps to address small problems early and eliminate the risk of larger, more costly repairs later. Manufacturer warranties will require that annual maintenance is performed and American Roofing can work with you to design a plan that will help extend the life of your roof. American Roofing, Inc. is a family owned, Leavenworth-based General Roofing Contractor, incorporated in 1973 in the State of Kansas.