Black streaks are pretty common on asphalt or Spanish tile roofs, especially when you live in a humid climate (like Clearwater Florida). As a homeowner, you may have wondered, “How to get rid of black streaks on the roof “. There are several reasons black streaks can appear. By having your roof professionally cleaned as part of your routine home maintenance you increase the lifespan of your roof. Early detection of problems that result in black streaks early can save you hundreds or thousands in roof repair