We are proud of our rich history and the progress we have made over the years. As we move forward, we continue to focus on delivering high-quality products and services to our customers, guided by the same values and principles that have helped us grow and succeed. Our journey began with a vision to revolutionize the roofing and ventilation industry. Over the decades, we’ve faced numerous challenges, but our commitment to excellence and customer satisfaction has never wavered.

Our team, a blend of seasoned experts and young innovators, has been instrumental in our achievements. They’ve worked tirelessly to ensure that every product we release meets the highest standards of quality and durability. As we reflect on our past, we are filled with gratitude for the trust our customers have placed in us. Their feedback and loyalty have been the driving force behind our innovations and expansions.

Looking ahead, we are excited about the future. With plans to introduce more cutting-edge products and expand our reach globally, we remain steadfast in our mission to provide the best in the industry. We invite you to be a part of our continuing story, as we strive to set new benchmarks and exceed expectations.

Our story began:

  • 1929: Founded as a roofing company by Leo Ohnsorg, the great-grandfather of the current company owner.
  • 1954: Establishment and integration of a building plumbing business.
  • 1959: Workshop expansion.
  • 1965: The company was converted into a corporation and received its current name, Ohnsorg Söhne AG.
  • 1979: The roofing business was spun off.
  • 1982: Expansion of the workshop with the construction of a larger hall.
  • 1993: Specialization in fine sheet metal products: chimney hats and ventilation hats.
  • 2000: Development and expansion of the product range.
  • 2007: Opening of the first Western Switzerland Office in Yverdon.
  • 2009: Opening of the Quartino branch in the spring.
  • 2009: Opening of the branch in Wangs in the fall.
  • 2011: Construction of a new production hall and commissioning of a state-of-the-art laser cutting system.
  • 2015: Expansion of the machinery with state-of-the-art press brakes.
  • 2016: Participated as an exhibitor at the “Dach+Holz International” fair in Stuttgart.
  • 2017: Development of the company’s app.
  • 2018: Participated as an exhibitor at the “Dach+Holz International” fair in Cologne.
  • 2018: Expansion of the laser cutting system with additional modules.
  • 2019: Development of a new company website.
  • 2020: Opening of the branch in Füllinsdorf BL in the winter.
  • 2023: In-house development of software to streamline work processes.