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The plague that infects homes in nearly
80 percent of the United States
Gloeocapsa Magma is a species of algae that causes black streaking and discoloration on asphalt/fiberglass shingles. If left untreated this algae will feed and grow until the entire roof becomes infested. Meanwhile, the roof becomes unsightly, and the algae covers the roof granules, which leaves the shingles unprotected from the sun's UV rays. Without UV protection, a roof will experience premature failure.
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