How to get rid of dark strains on your roof?
Published on: 06/04/2026
Those dark stains on your roof aren't just dirt -- they're algae eating your shingles. Learn what causes black streaks and the only safe way to remove them.
Pressure washing
Those dark stains on your roof aren't just dirt -- they're algae eating your shingles. Learn what causes black streaks and the only safe way to remove them.