If you live in a humid area, you've probably noticed some ugly black stains on your asphalt shingles. The stains on your shingles are most likely black algae. This is often caused by an accumulation of dirt, defective shingles, mold, or mildew; the most common cause is actually a blue-green algae known to us as Gloeocapsa Magma that is spread and grown through airborne spores. For replacement and maintenance in Great Falls check out Roofer911
What Are These Horrible Black Stains? first appeared on www.roofer911.com
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