Here's a first for us, a Cor-ten corrugated roof on a shed. This material is designed to form a protective 'rust' barrier over the surface of the alloy that will then look as if it's been in situ for decades. The above photo shows the shed on the day of installation. This week is forecast sunshine and showers, so by the end of the week it should be completely 'rusty' Cor-ten. Watch this space.