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What's Causing Those Black Streaks on Your Roof?

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Those unsightly shadowy streaks appearing on your roof aren't usually a sign of damage. Most frequently, they're the result of mold growth, specifically a type called dark-colored algae. This fungus thrives in moist https://funny-lists.com/story23629811/what-s-causing-those-black-streaks-on-your-roof

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