Of copper

Roofing copper coating is unique in its durability, the operational period exceeds 150 years.

The new copper roof is bright red, then its color is replaced by bronze, and then to malachite due to the formation of copper oxide, which protects the coating from destruction for many years. But in order for the roof to really serve for more than a hundred years, you need to pay sufficient attention to the roof frame or, in other words, rafters. In private houses, it makes sense to install wooden rafter farms, it is cheaper and quite reliable, but you can also use metal farms or reinforced concrete farms if desired. The classification and choice of rafter farms is not a simple task, but it should be solved.