Or copy this URL:
https://www.metalroofing.com/spirit/comment/6899/find/
You may want to go back to the roofing manufacturer and see what they suggest based upon the specific type of paint finish which may be on your roof.
The "general recommendation" though is a solution of water, detergent (such as Tide), and trisodium phosphate (such as Soilax).
Be careful.
10/17/2005
Isaiah Industries, Inc.
10/17/2005