United States Roofing Inc. We are a Virginia based corporation with our corporate headquarters located in Northern Virginia. We operate our Nationwide Company out of several local offices throughout the United States. We have extensive experience in all forms of commercial and residential roofing, siding, and window systems. All staff work off of one national company network and we are trained to be capable of working flawlessly, alone or all together. This allows us to effectively operate and manage any size project or volume of projects at once.