If you’ve noticed black streaks on your roof, you’re not alone. Many homeowners in Chattanooga deal with this issue due to the humid climate—but it’s more than just a cosmetic problem. 🦠 What Are Those Black Streaks? Those dark streaks are caused by algae (commonly known as Gloeocapsa Magma). This bacteria feeds on your shingles and spreads over time. ⚠️ Why Roof Cleaning Is Important Ignoring roof stains can lead to: Shortened roof lifespan Shingle damage Increased energy c