Put on non-slip shoes, gloves, eye protection, and a safety harness if needed
Use a ladder safely and work on a dry day
Remove loose moss gently with a soft-bristle brush or plastic scraper
Sweep debris off the roof carefully
Apply a roof-safe moss remover or diluted cleaning solution labeled for roofs
Let the treatment sit for the recommended time
Rinse lightly with low-pressure water if the product instructions allow
Avoid pressure washing
Clear gutters and downspouts after cleaning
Install zinc or copper strips near the roof ridge to help slow regrowth
Trim overhanging branches to reduce shade and moisture
Check the roof regularly and remove new moss early