Contact Technical Roofing Systems, Inc., for commercial roofing service including 24 hr. emergency repair, preventive maintenance, evaluation, roof alteration, warranty repair, and roof replacement. We serve the Baltimore/Washington, Northern Virginia metro areas and all of Maryland. Technical Roofing Systems, Inc., is a professional NRCA member dedicated to prompt quality work, fair pricing, and communication. Small jobs are our specialty, but we are large enough to handle most roofing projects. We are certified to install every type of commercial roofing system as well as commercial metal roof coatings. All of the products we use are brand names with well established reputations. What you get is a combination of quality products and a contractor you can trust.