copper cladding

Copper cladding is a layer of copper applied to the exterior of a building or to the surface of another material.

On buildings, copper cladding weathers to a distinctive green patina over time: The museum's copper cladding has turned verdigris after decades of exposure.

In manufacturing, copper cladding bonds copper to a base metal like steel or aluminum, combining copper's conductivity or corrosion resistance with the strength or cost advantages of the substrate.