Bart Roggensack

Drexel Metals, Inc. distributes metal roofing systems. Its products include roof and wall systems, product library, curved metal panels, coil and sheets, materials, color charts and snow retention. The company was founded by Richard Carroll in 1985 and is headquartered in Levittown, PA.

National Roofing Contractors Association operates as a nonprofit association that represents all segments of the roofing industry, including contractors, manufacturers, distributors, architects, consultants, engineers, building owners and county, city and state government agencies. The company was founded in 1886 and is headquartered in Rosemont, IL.

Johns Manville Corp. manufactures building and mechanical insulation, commercial roofing, glass fibers, and nonwoven materials for commercial, industrial, and residential applications. The firm?s products are also used in various industries including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing, and wind energy. The company was founded by Henry Ward Johns in 1858 and is headquartered in Denver, CO.