FOS producer of storm clips

Professional Wind Uplift Resistance for Pitched Roofs and Facades

Tested fastening solutions for roof tiles, facade claddings and PV modules

Friedrich Ossenberg-Schule GmbH + Co KG (FOS®) develops and manufactures fastening systems for standards-compliant wind uplift protection of small-format roofing materials and photovoltaic modules. Roofing and carpentry contractors, specialist merchants and the roof tile industry have relied on our technical expertise and practical solutions for decades. A comprehensive range of storm clips, ridge clips and facade clips is complemented by in-depth technical information and digital tools for safe planning and installation.

FOS test bench

Quality testing on in-house test rigs
FOS quality Made in Germany and tested according to DIN EN 14437

High pull-out resistance, a precise fit on tile and batten, installation-friendly design and long-lasting corrosion protection are key performance features of our products. All FOS® clips are tested on our own test rigs in accordance with EN 14437. This ensures that every solution meets the technical requirements for professional wind uplift protection.

Certified quality management in accordance with ISO 9001
FOS ISO 9001 Normec VQZ

Our management system complies with the requirements of ISO 9001. Independent certification by Normec VQZ confirms our structured approach to controlling, monitoring and continuously improving our processes.

Partnership with industry, trade and roofing contractors

Close cooperation with roof tile and concrete roof tile manufacturers as well as the roofing trade ensures practical relevance and technical up-to-dateness. Our application engineering team provides technical support by phone or digitally. In addition, we offer explainer videos and digital planning tools such as FOS WindCHECK®, FOS ClipCHECK® and FOS CombiCHECK®.

FOS quality Made in GermanyFOS® Quality – Made in Germany, delivered quickly

Production and shipping are located at our two sites in Hemer, North Rhine-Westphalia, and Treuen, Saxony. From there, the storm clips are promptly delivered to the retailers.

Values-driven approach
As an owner-managed family business in its fifth generation, FOS® stands for reliability, technical expertise and long-term thinking. 73 employees contribute every day to maintaining high standards of quality and service. We value honesty and fairness in our dealings with employees, customers and business partners. We actively train apprentices and are socially committed – by conviction.

FOS advantages at a glance:
  • Comprehensive range of storm, ridge and façade clips for common roof tiles across Europe
  • In-house test rigs in accordance with EN 14437
  • Certified quality management in accordance with ISO 9001
  • Digital planning tools and practical technical information
  • Close cooperation with industry and roofing professionals
  • Production in Germany
  • 10-point plan for sustainability and resource efficiency