Since 1978, Rayco Construction Inc. has been providing residential and commercial roofing systems. Based in Minneapolis, Minn., the company specializes in a range of roofing systems, including hot asphalt, metal, modified bitumen, polyvinyl chloride (PVC) and thermoplastic polyolefin (TPO). It also renders an array of services, repairs, replacement, new construction, evaluations and consulting services. In addition, Rayco Construction Inc. offers leak service, waterproofing, long-term maintenance, sheet metal fabrication and residential roof, siding and window replacement.