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Roof Stain History, from ancient algae, to roof algae. These black streaks are colonies of roof algae who are feeding on the limestone in your roof shingles. Why did this happen? Learn about Roof Stain History.
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Roof Shingle stains of black mold, and roof algae spread down the roof in a cone shape. Roof mold, Cyanobacteria, roof algae and lichens removal requires a quality roof cleaner. Protect the roof with annual roof cleaning.
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What are shingle manufacturers doing to prevent roof stains? Algae resistant shingles, these shingles are meant to prevent roof streaks, and roof mold caused by roof algae.
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