Corten weathering steel has anti-corrosive properties that gives it an advantage over other structural steels. The naturally occurring rust that it develops helps to lengthen the lifecycle of a weathering steel structure, which in turn keeps costs to a minimum.The protective layer of rust that Corten weathering steel develops when exposed to moisture and oxygen reduces the need for paint. This helps to avoid some of the issues and potential for damage created by volatile organic compounds found in certain paints.