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Hello,
I recently bought a house with a corten roof. It is about 6 years old. Someone told me that I had to seal the roof after it reached a certain color. Is this true? I am also installing flagstone around the house and the runoff water from the roof stains the ground. Would sealing this help or do I need gutters. What sealer would I use? Does Corten have a warranty?
Thanks
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https://www.metalroofing.com/spirit/comment/8719/find/
US Steel is the originator and producer of Corten. However, since the early 1980s, they have not suggested its use for architectural purposes, for the very reasons you cite.
I am not aware of any sort of sealer but you can contact them to check if you wish.
10/3/2006
Isaiah Industries, Inc.
10/4/2006