On July 2, 2007, a new chapter began for Cornell Roofing and Sheet Metal, one that would elevate a long-standing Kansas City commercial roofing company into a regional industry leader. That date marks the moment when Mary McNamara officially purchased the company, originally founded in 1927. But the date wasn’t selected at random; Mary intentionally chose July 2nd to honor her parents’ wedding anniversary, a symbolic nod to the importance of family in her leadership journey.
As Cornell Roofing and Sheet Metal approaches its 100th anniversary in 2027, we celebrate not just the legacy of the company, but also the remarkable path that brought Mary to the helm. A third-generation roofing professional, Mary grew up immersed in the industry. Her father, Jim, and uncle, Don, were influential leaders in roofing manufacturing, laying the foundation for her career. Still, Mary charted her own course, earning a BS in Accounting from Northern Illinois University and an MBA from Rockhurst University, before rising through the ranks in the roofing materials business.
At the time of purchase, Cornell Roofing and Sheet Metal was one of Mary’s clients. Taking ownership was a bold move—one that came with financial risk and immense responsibility. But Mary met the challenge with resolve. Under her leadership, the company grew from 26 to more than 90 employees, expanded capabilities, and solidified a reputation for quality and reliability in the commercial roofing and sheet metal sectors.
Now recognized as a certified Women-Owned Business, Cornell Roofing and Sheet Metal continues to thrive thanks to Mary’s strategic vision, her commitment to excellence, and a team that shares her values. Her contributions extend beyond Cornell, with leadership roles on numerous industry and community boards.
As we mark this meaningful anniversary, we thank Mary for her continued dedication to the company, her employees, and the Kansas City community.
Explore more about Cornell Roofing and Sheet Metal’s legacy and services at www.cornellroofing.com.
Cornell Roofing and Sheet Metal: Trusted Commercial Roofing Professionals Since 1927.