Hi all, I know this isn't a boat topic but I can't seem to find any info online that satisfied my question. I have a customer with two copper roofs over her bay windows. They are aged and they are staining the white siding around the windows black. She has asked me to paint them to prevent this from happening. Should I treat this the same as aluminium? Vineger, SE primer, prime, then paint? I know there are some pretty slick people here that might have dealt with painting copper in the past any suggestions would be appreciated. If copper simply will not hold paint I would like to hear that too. This isn't something I want to be going back to fix. Very difficult customer over the years. If copper isn't a good substrate for paint I will push for cleaning and waxing a bit harder than I have been so far. Thanks in advance guys.