To remove moss from a roof, spray a mixture of equal parts bleach and water throughout the roof using a garden sprayer. Install zinc strips across the length of the roof to prevent moss growth.
Remove moss from the roof with a long-handled scrub brush, a mixture of bleach and water, or a commercial roof cleaner. Another common method is to use a power washer, but this is not recommended, as it can damage the shingles.
Spraying a mixture of one part bleach and one part water on a roof kills moss. Plants around the perimeter of the house should be sprayed with water before spraying the mixture. This helps protect them from bleach that runs off the roof.
To remove moss from the roof, scrub the affected area with a utility brush, then wash the roof with a solution of oxygen bleach, dish detergent and water. The process of cleaning the roof can typically be completed in a single afternoon.
Remove moss from a roof using a brush to scrub it away. Then, follow with a bleach and water spray treatment on the roof to kill any remaining moss or algae, and add a 6-inch copper strip under the top row of shingles, to prevent its return.
Some good moss killers for the roof are Spray & Forget Super Concentrated Roof Cleaner and Wet & Forget Moss, Mold, Mildew & Algae Stain Remover, according to Roofpedia.com. Another good product is Wash Safe Roof Wash.
Remove moss from trees by hand, brushing and spraying the trunk with a pressure washer or copper hydroxide fungicide. Chemical control of mosses is very effective, but the homeowner should wear protective equipment when mixing fungicides.