Roof Cleaning Aberdeen, MD – Black stains and streaks on asphalt shingles are caused by algae growth. These stains are not only unsightly but, they are actually destroying your shingles, shortening your roof’s life span. When it rains, the algae is spread, causing black streaks and stains.If these stains are left untreated, the black streaks will…

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Roof Cleaning  Fallston MD by Liberty SoftWash What causes dirty shingles in Fallston, MD? Black stains and streaks on asphalt shingles are caused by algae growth. These stains are not only unsightly but, they are actually destroying your shingles, shortening your roof’s life span. When it rains, the algae is spread, causing black streaks and stains. If these stains are left…

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