O'Hara's Son Roofing (OSR)
OSR is a national commercial and industrial roofing contractor headquartered in Chicago, IL. Founded in 1987, we are a top-five commercial-only roofing contractor in the U.S., licensed in 48 states. We provide new roof construction, roof replacement, leak repair, and preventive maintenance for commercial and industrial flat roofs nationwide. We also have specialized expertise in cold storage facilities and data centers, where roof performance is critical to temperature control, uptime, and protecting sensitive operations. Our mission is to deliver the highest quality service, materials, and workmanship on every project and to uphold our reputation as one of the nation’s best commercial roofing companies.
O’Hara’s Son Roofing (OSR)
OSR is a national commercial and industrial roofing contractor headquartered in Chicago, IL. Founded in 1987, we are a top-five commercial-only roofing contractor in the U.S., licensed in 48 states. We provide new roof construction, roof replacement, leak repair, and preventive maintenance for commercial and industrial flat roofs nationwide. We also have specialized expertise in cold storage facilities and data centers, where roof performance is critical to temperature control, uptime, and protecting sensitive operations. Our mission is to deliver the highest quality service, materials, and workmanship on every project and to uphold our reputation as one of the nation’s best commercial roofing companies.
Flat Roof Pros Coast to Coast
We install a wide range of roofing systems and coatings, choosing the right solution for each building’s structure, climate, and use. Our project experience includes data centers, cold storage facilities, manufacturing plants, warehouses, retail centers, and other commercial properties. Beyond the roof itself, we provide OSHA-compliant safety solutions to protect anyone working on your roof, along with renewable energy solutions that help lower long-term operating costs.
A Commercial Roofing Powerhouse
OSR began in 1987 as O’Hara’s Son Roofing. In 2012, we made a strategic decision to focus exclusively on commercial roofing, a commitment that has driven consistent year-over-year growth. As a fully licensed, insured, and bonded contractor, here’s what every client can expect:
- One trusted standard delivered by professionals you can count on, in every market
- Strict quality and safety oversight from our dedicated Safety Department and on-site superintendents
- A single point of contact for clear, consistent communication on every project
A Commercial Roofing Powerhouse
OSR began in 1987 as O’Hara’s Son Roofing. In 2012, we made a strategic decision to focus exclusively on commercial roofing, a commitment that has driven consistent year-over-year growth. As a fully licensed, insured, and bonded contractor, here’s what every client can expect:
One trusted standard delivered by professionals you can count on, in every market
Strict quality and safety oversight from our dedicated Safety Department and on-site superintendents
A single point of contact for clear, consistent communication on every project
Mission
To provide the highest quality service, materials, and workmanship while maintaining our reputation as one of the nation’s best roofing companies.
Vision
To be the first choice commercial roofing company in the nation for customers as well as employees.
