O’Hara’s Son Roofing (OSR), established in 1987, is a family owned and operated roofing company based in Chicago, IL. We are a full service contractor working in the commercial and industrial market. In 2020, we ranked among the Top 100 Roofing Contractors in the country. We specialize in the installation of numerous styles of roof applications and coatings. Additionally, we provide extensive roof repairs, OSHA compliant safety items, and renewable energy solutions. We know that an investment in a new roof is one of the most important decisions you can make when upgrading your business or property. Our mission is to provide the highest quality service, materials, and workmanship to maintain our reputation as one of the nation’s best roofing companies.