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If you see black streaks running down your roof shingles, here's what they're telling you
Black streaks on shingles are caused by a living algae called Gloeocapsa magma, not pollution or dirt. The algae feeds on limestone filler in asphalt shingles and can be invisible for one to two years ...
BRC Exterior Cleaning Solutions Details Why North-Facing Slopes Streak First in Summit County Akron, United States - ...
New Resource Breaks Down How Often San Antonio Roofs Need Cleaning by Material and Shade Level San Antonio, United ...
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