When homeowners notice black streaks appearing on their roof, many assume it's simply dirt, age, or a cosmetic issue that can wait until "someday." In reality, those dark stains are often a living organism that may be slowly shortening the life of one of the most expensive components of your home. At Under Pressure Power Washing, one of the most common questions we hear is: "Do I really need to clean my roof?" The answer may surprise you. What Are Those Black Streaks on My Ro