Posted on Feb 28, 2019

Paul's Power Wash, LLC

What is that black stuff?!

Although those dark spots and ugly black streaks on your roof may look like dirt, mildew, soot or mold, what they really are is algae. The most common type is known as gloeocapsa magma—also known as blue green algae.
This algae growth usually begins as small spots and then eventually becomes visible streaks. By the time this algae is noticed, it has usually been on the roof at least two or more months!

Roof algae is not harmful or dangerous in itself, but after a period of time, the algae can cause the protective UV granules that cover roofing shingles to begin to come off, eventually drying them out.
Fungus—which also travels through the air—can combine with algae already present on your roof and form into lichen. This lichen feeds off both the algae and the shingle filler. Unlike algae, lichen can develop roots, which makes it harder to remove than algae alone.

The important thing to know is doing it yourself may cause damage if not done correctly and can void any warranties or homeowner insurance policies you may have.

Call Paul's today for a Free Soft Wash, Roof Wash estimate! Whether you have black streaks or just want to do a preventative wash, we are here for you!

📞 614-489-8776
📧 office@paulspower-wash.com

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