Certified Inc. Roofing is a roofing contractor in Columbia, MD that services Howard County, Bethesda, Columbia and nearby areas. Our roofing company offers residential roofing, commercial roofing, asphalt shingle roofing, metal roofing and many more. Customers love us because of our Military and First Responder Discounts, plus our 100% custom satisfaction rate. We also have industry affiliations and certifications such as CertainTeed 5-Star, CSSB and Mule-Hide. If you want to experience your most trusted Columbia roofing company’s excellent roofing services, call us now for free estimate!