The only way to take care of it is to use a high base chemical solution like zinc sulfate.
Green algae roof shingles.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Black or brown or green algae stains on asphalt roof shingles.
While some people actually like the look of moss on their.
We ll explain more of that in a bit.
What is roof algae.
Though often attributed to an accumulation of dirt defective shingles mold or mildew.
How to get rid of algae on the roof.
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If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores.
Here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles.
A roof may develop different types of algae lichens and fungi as bacteria take over.
Many homeowners mistake algae for roof mold in most cases however it is really a blue green type of algae and when it dies it leaves dark streaks on your roof.