This layer is a copper oxide.

The basis of the folding roof is a copper rolling sheet. This material is exclusive in terms of color, durability, operational properties.

Copper roof is the only type of roof that is not destroyed under the influence of the environment. It even improves its characteristics, its resistance to natural factors increases. Over time, red copper sheets are covered with patina. This layer is a copper oxide. Over time, its thickness does not increase, for example, from iron, which under a layer of rust continues to rust. A layer of patina is very racks to external influences. Therefore, the roof as a whole becomes almost eternal.