Copper in ArchitectureFact 2 of 17
In most of the country, copper weathers naturally to a lovely blue-green color, or patina, over time. In arid climates, the color change is usually to a nut brown. The color-change is the result of surface oxidation caused mainly by moisture and corrosive elements in the atmosphere. Unlike rust oxidation, the copper patina is a protective barrier that retards further corrosion, to maintain copper's long life.
