Over the last few decades, Aurubis has developed a range of factory-applied surface treatments to provide the various stages of oxidation and patination immediately. The processes involved are very similar to those that take place over time in the environment and utilize copper mineral compounds, not chemical treatments. Essentially, they bring about the environmental changes without taking away the integrity of Aurubis copper as a natural, living material.
Aurubis’ Nordic Surfaces include variable intensities of green or blue pre-patination and brown pre-oxidation. The copper alloys brass and Nordic Royal™ – a golden alloy – are also available, adding to a rich palette of colors and surface textures. All Nordic Surfaces form an integral part of the copper and are not coatings or paint. Ongoing changes will continue over time with all Nordic Surfaces depending on the local environment, ranging from quite rapid with Nordic Brass to minimal for Nordic Royal™. Nordic Surfaces are supplied with a protective sheet to the finished face.
Aurubis’ Nordic Surfaces are illustrated on the following pages. But Aurubis works closely with architects in developing tailored surfaces and other techniques in addition to the ranges shown here and our early involvement with the architectural design process is essential.