Yes! Roof cleaning can help get rid of the black or dark streaks, stains, and discoloration on your roof caused by algae, mold, or mildew. It is easy for things like algae to thrive in areas with high humidity and shade. Over time, they can accumulate on your roof's surface, leading to unsightly black streaks and premature damage. Annual roof cleaning will remove streaks and build up leaving your shingles looking refreshed.