My GAF Inspector referred me to Northern Virginia Roofing. He was doing some warranty work for me and referred me to them to fix some leaks in the roof. This was my first time using their services and I'm very pleased with how everything turned out. The technician who came out here, Danny, was great. He showed up on time and got to work right away. He was respectful of our home and property. He was knowledgeable and professional. He was courteous and friendly. He explained what he was doing and took the time to answer our questions. Their pricing was reasonable too. I would recommend using Northern Virginia Roofing!