From the solid copper "Golden Temple" in Kunming, China, to the famous baptistery doors of Italy's Florence Cathedral, copper and its alloys, bronze and brass, have served as decorative and functional elements on some of the world's oldest and most famous architecture.
Here in North America, our copper landmarks are a little younger, but no less impressive. Historic Christ Church in Philadelphia is the oldest-known copper-roofed church in America, dating back to 1727. The most enduring copper icon in U.S. history is the Statue of Liberty in New York Harbor, sculpted in 1884 from more than 160,000 pounds of the semi-precious metal.
Recently, homeowners have taken an interest in copper. Influenced by the development and availability of new, lightweight copper roofing shingles, more homeowners are choosing copper roofs for aesthetic and practical reasons.
"Homeowners turn to copper to add refinement and a sense of luxury to their homes," says David L. Hunt, manager of architectural services at Revere Copper Products, Inc., which developed its first copper shingle more than 50 years ago for the commercial market.
Kent Schwickert, president of Schwickert Inc. in Mankato, Minnesota, an architectural sheet metal fabrication and roofing company, agrees. He attributes the increased interest in copper shingles to a "desire for uniqueness" among affluent homeowners.
Vacation spots like Colorado's ski country and Jackson Hole, Wyoming, have long been home to copper roofs, says Hunt, because of the metal's ability to stand up to the extremes that Mother Nature can dish out -- such as high winds and heavy snowfall.
Various estimates put the lifespan of a copper roof at more than 100 years, while asphalt shingles -- the most commonly used roofing material in America -- are said to last 15-30 years, on average. One reason for copper's longevity is the natural blue-green patina that develops with age and that serves as a protective shell when copper is exposed to the elements.
In addition to its attractive patina, copper is environmentally friendly, boasting one of the highest recycling rates of any engineering metal. Because of their inherent value, copper building products are typically salvaged and recycled. Other key attributes of this premium metal are its fire resistance and ability to withstand excessive temperatures.
According to the Copper Development Association, there are at least a dozen manufacturers supplying copper shingles to contractors across the continent. A partial listing can be found at the association's Web site at www.copper.org under architecture (new products).