Wear non-slip shoes and use a stable ladder
Clear loose debris from the roof with a soft broom or leaf blower
Mix a roof-safe moss remover according to the label
Spray or apply the solution to the moss-covered shingles
Let the treatment sit for the recommended time
Gently scrub the moss with a soft-bristle brush if needed
Rinse lightly with low-pressure water
Repeat treatment for stubborn moss
Install zinc or copper strips near the roof ridge to help prevent regrowth
Trim overhanging branches to reduce shade and moisture
Keep gutters clean to improve drainage
Avoid pressure washing, which can damage shingles