How to Remove Black Streaks from Your Roof

Black streaks on your roof indicate algae, mold, and mildew. These contaminants can harm your family’s health, so you need to get tile roof cleaning as soon as possible to remove them. Acting quickly also prevents these substances’ spread and further damage to your roofing material.

Here, we go over how you can get rid of black streaks with professional tile roof cleaning.

What Are the Black Streaks on My Roof?

Black streaks on your roof indicate algae, mold, and mildew infestation.


Algae can form when there is too much moisture in the air, usually caused by a combination of rain and hot temperatures. Algae grows when it finds a surface to attach to, such as your shingle roof. The black streaks that form are actually colonies of algae growing in rows.


Just like algae, mold loves water and humid environments. Mold will start to grow if there is already some algae on your roof or if there are other sources of moisture in its environment, like leaking pipes. While mold may appear black at first glance, it usually has a greenish-blue tint with spots that look like white polka dots.


Mildew looks similar to mold but with a few different characteristics. It’s white instead of greenish-blue and appears more powdery than greasy or fuzzy, like mold does when wetter conditions exist outside (such as after several days of rain). Mildew thrives best when temperatures get cooler during winter because warm air inside homes gets trapped without being able to escape.

How Can I Remove These Black Streaks from My Roof?

One of the benefits of tile roof cleaning is that it can remove black streaks from your roof. These roof cleaning services enlist pressure washing techniques to safely remove any dirt and grime from the surface of the tile or shingle roof. Then, the professionals apply a sealant to protect the roof from future stains and staining.

This process takes only one to two hours from start to finish. You don’t need to spend hours upon hours scrubbing your roof with soap and water before calling in the professionals!

Contact Us for a Free Roof Cleaning Quote

If you’ve got black streaks on your roof, contact A Buff and Beyond Pressure Washing for state-of-the-art tile roof cleaning. We’re the premier roof cleaning company serving Port St. Lucie and surrounding areas. We have over ten years of experience working with tile roofs, so we know how to get them sparkling clean again—and fast.

Our process is low-pressure and non-abrasive. You’ll never have to worry about us damaging your roof or siding, or causing leaks. Our team will work quickly to remove any stains and refresh your home’s appearance, enhancing its curb appeal.

Call 772-971-2121 today to get your free estimate with the professionals at A Buff and Beyond Pressure Washing.



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