Position the ladder along the copper roof where the marks are located. Ask a helper to hold the ladder steady while you work.
Mix a detergent and water solution in a bucket with a handle. Follow the directions of the label for the ratio or detergent to water. Use a neutral detergent that is free of pyrophosphates.
Carry the scrub brush, wood spatula and cleaning solution up the ladder with you.
Remove any debris from the copper roof with a spatula made of wood or a plastic scraper.
Dip a scrub brush into the cleaning solution and scrub the marks on the copper roof.
Carry the supplies down the ladder and then return with with distilled water and a soft cleaning cloth. Rinse the roof thoroughly with the water.
Dry the copper roof area with a soft cleaning cloth. This reduces the chance of streaks or spots remaining on the copper.