Create a lasting, sustainable impact on society

Patina is a Dutch roofing company that positions itself as a partner for the entire lifecycle of roofs — from design and construction to maintenance and sustainable solutions. They focus on extending roof lifespan, managing total cost of ownership, and integrating sustainability, such as using roofs as a source of renewable energy. Patina serves housing corporations, healthcare institutions, government bodies, and property managers, offering reliable, innovative, and customer-centered services with a strong emphasis on quality, safety, and long-term collaboration. [TODO replace this text]

Erdo B.V., based in Capelle aan den IJssel, Netherlands, is a specialist in roofing services.

• The company has been active for over 95 years, since its foundation in 1928, building expertise in laying, maintaining, and managing roofs.

• Their services go beyond simply making roofs watertight: they offer roof insulation, green roofs, retention roofs, parking deck roofs, solar-energy systems installed on roofs, lightning protection, and fall protection.

• Erdo serves a variety of sectors, including residential, industrial, commercial, and institutional buildings such as schools, factories, and offices

• The company is part of the Primutec Solutions Group, which operates more broadly in roof service and maintenance.

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Holl Flachdachbau has been a reliable roofing partner in Germany since it first started trading back in 1965. The company has gained in-depth experience over the years and now has 16 branches nationwide. Holl Flachdachbau specialises in the building and renovation of flat-roofing and insulation products.

Oranjedak B.V., headquartered in Zwijndrecht, is one of the strong players in the Dutch roofing industry. [TODO: replace]

Rudde Dakbedekking is a family-owned Dutch roofing company, founded in 1978. rudde.nl+2primutec.eu+2 Based in Nijverdal (Overijssel), it offers a wide range of roofing services for both new construction and renovation projects. [TODO: replace]

NDW Niemeier Dach & Wand GmbH, based in Dortmund, is a German specialist for flat roofs and façade constructions with more than 80 years of experience. The company offers new construction, renovation, maintenance, and repair services for industrial and commercial buildings. Known for handling complex and large-scale projects in Germany and across Europe, NDW combines technical expertise with reliability, delivering high-quality roofing, façade, glass, and noise protection solutions [TODO: replace]

NAB Bliksembeveiliging is a leading Dutch specialist in earthing and lightning protection. The company provides a complete range of products and services including lightning and surge protection, earthing systems, risk analysis, EMC solutions, and cathodic protection. Their clients include installers, construction companies, industries, and private individuals. With nationwide coverage, NAB delivers design, installation, maintenance, and expert advice, ensuring safety, reliability, and compliance with the highest quality and safety standards (ISO 9001, VCA, BRL 1201) [TODO: replace]

Lösch Blitzschutzbau is a German company located in Offenburg that specializes in lightning protection systems. They offer services and products including surge protection, installing conductors, planning and executing lightning protection installations. The firm operates as a Kommanditgesellschaft (limited partnership) and is registered in the Freiburg region. [TODO: replace]

ACN Bliksembeveiliging, based in Utrecht, specializes in lightning protection, earthing, and fall protection for sectors such as industry, telecom, government, and healthcare. They provide complete solutions from risk analysis and design to installation, inspection, and maintenance, ensuring maximum safety and compliance. [TODO: replace]

Blitzschutzbau Geyer GmbH is a German company with over 50 years of experience in lightning protection systems. Based in Hildesheim and Braunschweig, they operate nationwide, offering planning, installation, and inspection of complete lightning and surge protection solutions. With a team of around 25 specialists, Geyer provides tailored concepts for buildings with sensitive IT and energy systems, ensuring compliance with DIN, VDE, IEC, and EN standards. The company is active in professional associations, emphasizes innovation, and offers additional services such as risk analyses, safety distance calculations, and expert inspections. [TODO: replace]

Marschner Blitzschutzbau is a German company specializing in lightning protection systems. Based in southern Germany, they design and install customized and reliable solutions including earthing systems, surge protection, and interception devices. With extensive experience and numerous reference projects, Marschner provides tailored concepts for residential, commercial, and public buildings. The company is a member of the Association of German Lightning Protection Companies (VDB), ensuring high quality and compliance with safety standards. [TODO: replace]

Clen Solar is a German full-service provider of photovoltaic and energy solutions. Based in Aue-Bad Schlema, the company offers customized solar systems, storage solutions, tenant electricity models, solar carports, wallboxes, and more. As part of Holl Flachdachbau GmbH & Co. KG, they also integrate roof renovation, flat roof construction, and lightning protection, delivering everything from planning to long-term maintenance. Clen Solar serves businesses and public institutions, focusing on sustainability, cost savings, and energy independence. [TODO: replace text]

Oranjedak B.V., headquartered in Zwijndrecht, is one of the strong players in the Dutch roofing industry. [TODO: replace]