While your roof, like all exterior surfaces of your home, will accumulate dirt and grime build-up over time, the black streaks most commonly seen on shingles is actually a type of organic growth. Specifically, those black stains on your roof are a form of blue-green algae, and while this algae is not inherently harmful, the conditions that keep it sustained are also the conditions in which more hazardous substances like mold and mildew thrive. Our roof cleaning service will easily get rid of any and all staining and organic growth so you can sit back and enjoy a roof that looks great from all angles!