Wear non-slip shoes, gloves, eye protection, and use a stable ladder
Clear loose debris from the roof with a soft broom or leaf blower
Apply a moss remover or roof-safe cleaning solution according to the label
Let the treatment sit for the recommended time
Gently scrub stubborn moss with a soft-bristle brush
Rinse lightly with low-pressure water if the product instructions allow
Avoid pressure washing, which can damage shingles and force water under them
Remove moss from gutters and downspouts
Trim overhanging branches to reduce shade and moisture
Improve roof drainage and airflow where possible
Install zinc or copper strips near the roof ridge to help prevent regrowth
Repeat treatment as needed during damp seasons
Hire a professional if the roof is steep, fragile, or heavily covered in moss