Hello Yakov, Copper and copper alloys, such as brass and bronze, are showing up on roofs, entryways, facades, gutters, and downspouts. Even though it is quite expensive to purchase and install, they're seen as a good long term investment because they tolerate inclement weather. A properly installed copper roof will last more than 100 years, while most traditional shingle roofs only 30 years. Another good green point is that copper elements can be completely recycled, so they will never take up space in a landfill. If you look around Brooklyn and Manhattan you will notice many copper roofs (now a green shade like the Statue of Liberty) on older buildings. Also Yakov, did you know I also sell homes in Brooklyn?