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Semcoglas

German flat-glass manufacturer and processor producing safety and insulating glass for facades and interiors across Europe.

Last updated September 29, 2026

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Overview

Semcoglas (also known as the Semcoglas Group or SEMCO Group) is a German flat-glass manufacturing and processing group headquartered in Westerstede, Lower Saxony. It was formed in 1997 through the merger of Schüller Qualitätsglas of Westerstede and the Isoglas Group of Nordhorn. The group operates across Europe, with production and/or sales at 23 locations, and produces and processes more than 11 million square meters of safety and insulating glass per year. The company's product range covers facade glazing and interior glass applications. Under the Klimaglas brand it markets specially coated glass optimized for a balance between maximum daylight and protection against summer overheating. It also supplies thermal insulation glazing, solar control glass, acoustic glass and safety glass. For interiors, it produces glass doors, kitchen splashbacks, all-glass showers and glass stair treads. Its subsidiary Finiglas produces curved facade glass. Semcoglas has expanded through organic growth and acquisitions. Since 2006 it has operated a float glass plant together with Euroglas in Osterweddingen. In 2008 it opened Germany's northernmost insulating glass production facility in Kropp. Since 2022 the SEMCO Group has also included two locations in Denmark. The group continues to invest in its network and product portfolio, and in 2024 it received a supplier award ("Lieferanten Oscar") and renamed Glas Spiegel Altenkirchen to Semcoglas GmbH, while also acquiring caleoglas in Murr.

History

The Semcoglas Group was formed in 1997 through the merger of Schüller Qualitätsglas of Westerstede and the Isoglas Group of Nordhorn. The headquarters is in Westerstede, Lower Saxony. Since 2006, the company has operated a float glass plant together with Euroglas in Osterweddingen. In 2008, Germany's northernmost insulating glass production facility was opened at the Kropp site. The group produces and processes more than 11 million square meters of safety and insulating glass per year at 23 locations across Europe, with 21 locations in Germany alone producing and distributing insulating glass, safety glass and glass for interior applications. Since 2022, two locations in Denmark have also been part of the SEMCO Group. In 2024, the group received a supplier award ("Lieferanten Oscar"), renamed Glas Spiegel Altenkirchen to Semcoglas GmbH, and acquired caleoglas in Murr. The Kropp site celebrated 100 years of glass finishing in 2024.

  • 2024

    SEMCO Group received "Supplier Oscar" 2024.

  • 2024

    Glas Spiegel Altenkirchen renamed to Semcoglas GmbH.

  • 2024

    SEMCO took over caleoglas in Murr.

  • 2024

    SEMCO Kropp celebrated 100 years of glass finishing.

  • 2022

    Two locations in Denmark joined the SEMCO Group.

  • 2008

    Germany's northernmost insulating glass production opened in Kropp.

  • 2006

    Float glass plant operated together with Euroglas in Osterweddingen.

  • 1997

    Semcoglas Group formed through merger of Schüller Qualitätsglas and Isoglas Group.

Products and positioning

European flat-glass specialist for facade and interior glazing, combining tradition with innovation and emphasizing daylight, sustainability, safety and comfort.

  • Klimaglas

    Specially coated glass optimized for a balance between maximum daylight and protection against summer overheating.

  • Thermal insulation glazing

    Insulating glass for thermal insulation.

  • Solar control glass

    Glass that controls solar heat gain.

  • Acoustic glass

    Glass for sound insulation.

  • Safety glass

    Glass that increases active and passive safety, protecting against break-in, bullets and explosions, and preventing injury from broken glass.

  • Curved facade glass (Finiglas)

    Curved glass for facade design produced by subsidiary Finiglas.

  • Interior glass applications

    Glass doors, kitchen splashbacks, all-glass showers and glass stair treads.

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