excessive chalking on metal roof

Guest User
My metal roof has excessive chalking. The pitch of the roof is 9/12. What is the best way to remove the chalking.
Todd Miller
Isaiah Industries, Inc.
You may be able to cleanse it with a mixture of water, detergent, and TSP. At one time there was a coating out which purported to fix oxidized surfaces but they seem to be out of business. Perhaps it did not work so well.
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