What Are Those Black Streaks on Your Roof? 

Have you been noticing unattractive black streaks on your neighbors’ roofs? Maybe they’re on your own roof, too. You’ve probably thought about how unattractive they are and wondered what exactly they are and what causes them–as well as how to get rid of them.

Not only are those black streaks and spots an eyesore, but they can also cause damage to your roof. Luckily, removing these streaks is simple when you hire a professional roof cleaning company. At Puget Power Washing, we are among the top-rated roof cleaning companies in the area.

Why You’re Seeing Black Streaks on the Roof

While you might believe that the black streaks are dirt or mold, they are actually streaks of a specific algae known as gloeocapsa magma. Gloeocapsa magma is typically blue or green, but it develops a dark color to protect itself from the sun.

What Causes the Black Algae Streaks on the Roof?

As gloeocapsa magma grows on your roof and begins to group, it causes black streaks. The wind carries the algae spores, which then settle on your roof. However, the weather also plays a significant part in creating the perfect breeding ground for gloeocapsa magma to thrive.

The areas of your roof with the most shade and the least sunlight typically show the most algae growth. Those parts of your roof are consistently damp, creating the perfect environment for algae to flourish.

How Algae Can Harm Your Roof

Gloeocapsa magma commonly grows on roofs with asphalt shingles. Asphalt shingles use limestone, which provides food for the algae. Over time, the algae weaken the materials of your roof, causing structural damage.

In addition, algae can cause health issues, increase utility costs, and cause uneven heating and cooling in your home.

How To Remove Black Streaks on Your Roof

If you notice black streaks on your roof, you should remove them immediately. They will not go away on their own, and if you leave them for extended periods of time, they can harm your roof.

Hiring a roof cleaning company such as Puget Power Washing is the simplest and most effective solution to remove black streaks from your roof and increase your home’s curb appeal. Our expert roof cleaning service team has the knowledge and skill to clean the streaks safely.

Contact Our Professionals at Puget Power Washing

Our team at Puget Power Washing provides dependable and expert roof and gutter cleaning services throughout the Seattle-Tacoma area. We have a reliable team of licensed and insured technicians ready to tackle the most challenging pressure-washing jobs. We always take the time to answer your questions, address your concerns, and provide honest feedback.

When seeking the best roof cleaning company in your area, look no further than Puget Power Washing. We use the latest technology and the safest solutions for high-quality results. Call us today for more information on our other exterior cleaning services such as window cleaning, house washing, and other pressure washing services.

Make Puget Power Washing your professional roof cleaning partner in the Greater Seattle Area. Contact our team today at 206-701-9280 to learn more about our services and schedule your free estimate.

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