RETURN TO I Have An Existing Metal Roof and Have A Question
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Have you contacted the panel or metal supplier to see what they say?
Unfortunately, once the GALVALUME panels have started to form black spots there is no remedy. GALVALUME panels are very robust toward natural weather but chemical resistance from high or low pH solutions cause accelerated corrosion. Heavy foot traffic with dirty footwear tends to scuff the coating and make the initial dark spots.
What can I use to get the scuff marks in the red clay off my panels I've tried power washing I've tried vinegar tried detergent and it seems maybe some of that will take the red mud off but it won't take the black marks off and then it starts turning my panels black so I do not know what to use can you please help I have to finish with this project by the end of this week or I won't get paid please help!
