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All About Blue-Green Algae on Roofing Systems

Together with the siding, trim, windows and entry doors, your roof plays a crucial role in your home’s curb appeal. After all, it is one of the first things people see when they drive or pass by your property. Constant exposure to the elements, however, can affect its appearance. In time, you may begin to notice black streaks on the surface—an indication of blue-green algae growth. They may not pose any structural threat to your roof, but these microscopic yet noticeable organisms can make your beautiful roof look unsightly.