Oxidized Copper: Nordic Brown | Aurubis

Aurubis offers copper for roofs and façades treated with a variety of factory-applied surface treatments to create various stages of oxidation and patination. The surface finishes in the Nordic Copper range include varying intensities of brown oxidation and green or blue pre-patination. Aurubis provides prefabricated systems for the material as well.

Nordic Brown

This copper finish is burnished at the Aurubis mill to immediately create the oxidized brown surface that would otherwise develop naturally over time when exposed to the elements. The finished color is determined by the thickness of the oxide layer.

Nordic Brown	Nordic Brown Light

Nordic Brown and Nordic Brown Light surface finishes have the benefit of minimizing hand and other construction marks that can be visible for a short time after the installation of bright Nordic Standard copper.

To create interesting visual effects, Nordic Brown and Nordic Brown Light are effective when combined with other surface finishes such as Nordic Standard or Nordic Royal.

Technical Details

Production Process

Copper sheets and strips go through a carefully controlled pre-oxidization and pre-patination process to immediately provide the same brown oxidized and green or blue patinated surface that would develop naturally over. The pre-patination process encourages the natural patina to continue forming through environmental exposure, dependent on the local atmosphere and rainfall.

Custom-Made Surface Finishes and Forms

Aurubis regularly works with designers to explore custom-made copper surface finishes and forms. Custom options can include:

• Imaging or text printing surfaces
• Profiled sheets and pressed surfaces
• Perforated or expanded copper sheets

Planning and Installation Support

Aurubis can achieve different architectural effects of texture and scale using different installation techniques and systems – ranging from traditional standing seam sheet installation to panels, cassettes and other pre-fabricated systems.