Jansen AG

Jansen AG is a Swiss, family-owned industrial company that develops, manufactures and distributes systems and components for the construction sector. Its principal area is the production of steel profile systems used in windows, doors and façades. The company also has a substantial history in plastic products, including tubes and piping solutions for geothermal energy, building technology and other construction applications. In Switzerland and Liechtenstein, it additionally acts as the exclusive licensee of Schüco for aluminium solutions, allowing it to offer architects and fabricators a broader material portfolio than its own steel systems alone. The company was established in 1923 by Josef Jansen and began with six employees. Its first major industrial expansion came in 1930, when it started producing steel pipes. In 1955, Jansen added plastic tubes to its range, creating a second long-term product area alongside steel. Over subsequent decades, the company developed plastic systems for construction-related applications, including geothermal installations, building services and piping. This combination of metal and polymer expertise helped Jansen serve both specialist fabricators and broader building-industry markets. Jansen expanded beyond Switzerland in 1997 by opening its first production site outside the country in Dingelstädt, Germany. The German facility strengthened the group’s manufacturing footprint and supported its international activities. The business remained family-owned throughout its development. By around 2024, the Jansen Group employed approximately 600 people internationally. A significant strategic change occurred in 2021, when Jansen decided to concentrate more clearly on steel products for windows, doors and façades. As part of this repositioning, its supplies for the automotive industry were spun off to Mubea. The move narrowed the company’s industrial focus and reinforced its identity as a specialist provider for the building envelope and construction sector rather than a diversified supplier to multiple industries. Jansen expanded its capabilities again in 2023 through the acquisition of Rino Weder AG in Oberriet, Switzerland. The transaction added powder-coating technology to the group’s capabilities, complementing its profile-system activities with an important finishing process for metal components. The same year marked Jansen’s centenary, providing a milestone for a company that had evolved from a small pipe producer into an international construction-products group. The company’s market positioning is based on engineering expertise, system development, manufacturing capability and long-term family ownership. Its product scope connects steel profiles, plastic systems, aluminium solutions distributed under licence and surface-finishing capabilities. Jansen’s products are primarily directed at professional customers such as architects, window and door fabricators, façade contractors, installers and construction-industry distributors. The company has also received recognition for its work in geothermal technology, including the European Geothermal Innovation Award in 2019.

Jansen AG was founded in 1923 by Josef Jansen as a small Swiss industrial enterprise with six employees. The company’s early development centered on metal production, and in 1930 it began manufacturing steel pipes. This established a technical and production base that later supported its move into engineered steel profile systems for the construction industry. In 1955, Jansen broadened its portfolio by introducing plastic tubes. The addition gave the company a second materials platform and eventually led to the development of plastic products for construction-related applications. Over time, these products came to include systems associated with geothermal energy, building technology and piping. The combination of steel and plastic products allowed Jansen to address several infrastructure and building applications while retaining a manufacturing-led business model. The company’s international footprint expanded in 1997 with the establishment of its first production site outside Switzerland, in Dingelstädt, Germany. This facility marked an important step in the development of the Jansen Group as an international operating business rather than a solely Swiss manufacturer. Jansen continued to serve professional construction markets through products for windows, doors, façades and technical building systems. Jansen’s construction offering also includes aluminium solutions supplied through its role as Schüco’s exclusive licensee in Switzerland and Liechtenstein. This relationship complements Jansen’s own steel systems and enables the company to provide architects and processors with solutions across different structural materials. In 2021, Jansen made a strategic decision to sharpen its focus on the construction sector. It concentrated on steel products for windows, doors and façades and spun off its automotive-industry supplies to Mubea. This change represented a clearer specialization in building-envelope products and reduced the role of automotive components within the group’s activities. In 2023, Jansen acquired Rino Weder AG, based in Oberriet in the canton of St. Gallen. The transaction added powder-coating technology to Jansen’s capabilities, strengthening the group’s ability to offer finishing services and supporting the vertical integration of its metal-product activities. The year also marked the company’s 100th anniversary. Jansen remains a 100-percent family-owned business. Around 2024, the Jansen Group employed approximately 600 people internationally. Its current profile combines steel profile systems for windows, doors and façades with plastic construction products, licensed aluminium solutions, geothermal and building-technology systems, and powder-coating capabilities. The company’s history reflects a gradual transition from basic pipe production to specialized, engineered systems for professional construction markets.

• 2023

  Acquisition of Rino Weder AG

  [1]Jansen AGen.wikipedia.org

  The acquisition added powder-coating technology to Jansen’s capabilities.

• 2023

  100th anniversary

  [1]Jansen AGen.wikipedia.org

  Jansen celebrated its centenary.

• 2021

  Strategic focus on construction steel systems

  [1]Jansen AGen.wikipedia.org

  Jansen concentrated on steel products for windows, doors and façades and spun off automotive supplies to Mubea.

• 2019

  European Geothermal Innovation Award

  [1]Jansen AGen.wikipedia.org

  The company received the European Geothermal Innovation Award.

• 2013

  Regional business award

  [1]Jansen AGen.wikipedia.org

  Jansen received the Preis der Rheinthaler Wirtschaft.

• 1997

  First production site outside Switzerland

  [1]Jansen AGen.wikipedia.org

  Jansen established a production site in Dingelstädt, Germany.

• 1955

  Plastic tubes added

  [1]Jansen AGen.wikipedia.org

  The company expanded into plastic tubes, a product area that later developed into broader construction and piping systems.

• 1930

  Steel-pipe production begins

  [1]Jansen AGen.wikipedia.org

  Jansen began producing steel pipes, establishing its early metalworking specialization.

• 1923

  Company founded

  [1]Jansen AGen.wikipedia.org

  Josef Jansen founded Jansen AG in Switzerland with an initial workforce of six employees.

A family-owned Swiss specialist in engineered steel profile systems and construction technologies, with complementary plastic, aluminium-licensed and powder-coating capabilities.

• Construction systems

  Steel profile systems

  Jansen’s core offering consists of engineered steel profile systems for windows, doors and façades. These systems are intended for professional architects, fabricators and construction specialists and represent the company’s principal strategic focus after its 2021 decision to concentrate on construction steel products.

• Plastic construction products · 1955

  Plastic tubes and piping systems

  Introduced in 1955, Jansen’s plastic product range developed from tubes into systems for piping and other construction applications. The portfolio includes solutions associated with building technology and infrastructure-related uses.

• Energy and building technology

  Geothermal-energy systems

  Jansen develops plastic systems for geothermal-energy applications. The company’s work in this field was recognized with the European Geothermal Innovation Award in 2019.

• Aluminium building systems

  Licensed Schüco aluminium solutions

  As Schüco’s exclusive licensee in Switzerland and Liechtenstein, Jansen offers aluminium solutions for architects and processors. These products complement Jansen’s own steel profile systems for building-envelope applications.

• Surface finishing · 2023

  Powder-coating capabilities

  Following the 2023 acquisition of Rino Weder AG, Jansen added powder-coating technology to its capabilities. The process broadens its metal-product and finishing offering, particularly in connection with construction components.

• 2023

  Acquisition of Rino Weder AGM&A

  Background

  Jansen sought to expand its capabilities in metal-component processing and finishing.

  Action taken

  Jansen acquired Rino Weder AG in Oberriet, Switzerland.

  Aftermath

  The acquisition added powder-coating technology to the Jansen Group’s capabilities.

  Source

• 2021

  Refocus on steel construction productsStrategy

  Background

  Jansen operated across construction-related products and also supplied components to the automotive industry. The company chose to sharpen its strategic identity around steel systems for windows, doors and façades.

  Action taken

  Jansen spun off its automotive-industry supplies to Mubea and concentrated on steel products for the building envelope.

  Aftermath

  The decision reduced the group’s automotive exposure and reinforced its position as a specialist construction-products manufacturer.

  Source

1. 1Jansen AGen.wikipedia.org