Established in 1967, CentiMark Corporation is one of the largest roofing contractors in North America. It serves clients in the commercial, residential and industrial sectors. The company provides installation services for single-ply, thermoplastic, bitumen, metal, rubber and built-up roofing systems. It offers roof repair and inspection services and conducts roof maintenance programs. CentiMark operates more than 65 offices in the United States and Canada. It also provides roof coatings, wall panels and shingles. Additionally, the company offers flooring systems, cleaning products and maintenance services through its division, QuestMark. It provides roof accessories, including pitch pans, skylights and expansion joints. CentiMark Corporation is headquartered in Pittsburgh.