About CMR Construction & Roofing CMR Construction & Roofing is the 10th-largest roofing company in America. Over nearly 20 years in business, we have been dedicated to building, protecting, and preserving communities and historic landmarks nationwide. Our team of experts delivers on our promise of superior craftsmanship, performance, precision, and aesthetics for commercial, residential, and government clients. We have the team, equipment, supplies, and relationships to successfully complete projects of any size and complexity on time and on budget.