Copper's longevity is legendary. Almost all of the copper produced throughout time is still in use. In addition to being 100% recyclable, most architectural copper produced today has a recycled content of nearly 75%. Thus, not only is copper the best choice to protect a structure, it's also the best choice to protect the environment. The Zappone Copper Shingle is available in 16 oz copper or "Tough 12" High Tensile strength copper-both gauges will protect and beautify structures for literally hundreds of years.