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Archive for November, 2011

Black Stains on Roofs

Black Stains on Roofs

If you have nasty black stains on your asphalt shingle roof, don’t worry.  The black staining won’t damage the shingles, and it won’t make your roof leak.  This black staining is typically caused by an algae, and usually shows up on areas of the roof that don’t get much sunlight, such as the north side. […]

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