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Galvanized Steel Treatment

  1. Oct 2, 2007 #1
    1. The problem statement, all variables and given/known data

    A galvanized steel roof shows small brown stains indicating minor rust. There are no penetrations of the material. What would be the most appropriate treatment and why?

    2. Relevant equations


    3. The attempt at a solution

    The brown stains indicate that the zinc has been corroded somehow or there were un-galvanised patches to begin with, thus exposing the iron interior to oxidation. However, I am unsure of what method would be best to treat this. Any help would be appreciated, thank you.
  2. jcsd
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