Tag: home inspection

What’s That Roof Stain?

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roofstain

The black mold-like stains and streaks that appear on roofs, particularly light-colored asphalt shingles, are actually a blue-green algae (Gloeocapsa magma). Commonly found in climates with warm, humid summers – like Baltimore – it does no damage to the roofing, even though it may be unsightly.

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