What’s Growing on Your Roof? The Truth About Those Black Streaks
Why You Should Schedule a Roof Cleaning ASAP
Dark streaks on a roof are common in Eastern North Carolina. Many homeowners assume they are caused by dirt or pollution, but the real cause is algae. Understanding what it is and how to remove it safely can help you protect your home and extend the life of your roof.
The Cause: Algae Growth
The black streaks are caused by a type of algae known as Gloeocapsa Magma. It spreads through the air and thrives in warm, humid conditions. The algae feed on the limestone filler in asphalt shingles, which provides a source of nutrients. Over time, this results in streaks that spread down the roof as rainwater moves across the surface.
Why You Should Address It
Roof algae is not only a cosmetic issue. It can:
- Hold moisture that contributes to shingle deterioration
- Reduce the roof’s ability to reflect heat, increasing cooling costs
- Shorten the lifespan of roofing materials
Early treatment prevents these issues and helps maintain the roof’s appearance and function.
Why Pressure Washing Is Not the Solution
Pressure washing may seem like a quick fix, but it can damage shingles by removing protective granules and weakening the roof’s surface. It also fails to kill the algae at the root, allowing it to return quickly.
A soft wash is a safer and more effective solution. It uses low pressure and cleaning solutions designed to eliminate algae without harming shingles, gutters, or nearby plants.
How Spartan Pro Wash Cleans Roofs Safely
Spartan Pro Wash uses a professional soft washing system that:
- Kills algae and bacteria on contact
- Restores the original color of the roof
- Helps prevent regrowth for a cleaner, longer-lasting finish
Our process meets manufacturer guidelines for roof cleaning and is safe for all roofing materials, including asphalt and metal.
Serving Eastern North Carolina
Spartan Pro Wash serves Greenville, Winterville, Ayden, Washington, and nearby areas. Our trained team provides reliable exterior cleaning services to help homeowners maintain their properties with care and consistency.
Schedule a Roof Cleaning
Schedule a free estimate to learn how professional soft washing can extend the life of your roof.
