Copper cladding is very durable and lightweight compared to other materials and techniques, and at the end of the building life it is also 100% recyclable.
Given the recent publicity about high metal prices, it may be surprising for most people to learn that copper is a very cost-effective cladding and roofing material. With good building design, materials choice and craftsmanship, copper roofing / facade cladding can be cheaper than slates or concrete tiles, especially when one takes into account the lasting colour, durability, maintenance-free and lightweight nature of the cladding.
The ductility and malleability of copper make it an easy material to form over irregular roof structures. Domes and other curved roof shapes are easily formed and handled with copper.