How to paint a galvanized roof?
I've just added on 1000 sq. ft. to my house which had a faded green metal roof that I didn't like. Instead of replacing the entire roof, I covered the addition with non-painted, galvanized (Mueller) metal roof and planned on painting the whole thing the same color (dark brown). I've heard that painting the existing roof won't be tough, but the new galvanized part is sometimes hard to get paint to stick to. It's been weathering up there for 10 months now. Does anyone have any suggestions on the best way to paint it. I know that pressure washing and cleaning with vinegar is a must, but I don't know if I need to prime or what type of paint to use. I'm assuming acrylic latex. Any help would be greatly appreciated.
Marty in Texas.