Why Florida's Climate Causes Black Roof Streaks

Those dark streaks on your roof aren't dirt—they're typically a type of algae called Gloeocapsa magma. It thrives in Florida's heat, humidity, and frequent rainfall.

As the algae spreads, it traps moisture against your roofing material, affecting appearance and potentially shortening the life of your roof if left untreated.

Common Causes:

• High humidity
• Frequent rain
• Shade from trees
• Poor airflow
• Organic debris on the roof

Why You Shouldn't Pressure Wash a Roof:

Using high pressure can:

• Damage shingles
• Remove protective granules
• Crack roof tiles
• Void certain manufacturer warranties

Professional soft washing removes the algae while minimizing the risk of damage to the roofing system.

Prevention Tips:

• Trim overhanging tree branches
• Keep gutters clean
• Remove leaves and debris
• Schedule professional roof cleaning before heavy staining develops