Once on the roof lichen cannot easily be removed.
Fungus roof shingles.
Some black stains on asphalt roof shingles are caused by a black algae sometimes misnamed as a black fungus or even a mildew such as that shown in the photograph here.
Mold on roof jan 30 2018.
Black algae stains may be mistaken for but are not extractive bleeding a product cosmetic defect.
Even if it dries out it can come back to life when rain or moisture appears.
The first one we will talk about is algae.
Black algae stains may be mistaken for but are not extractive bleeding a product cosmetic defect.
Some black stains on asphalt roof shingles are caused by a black algae sometimes misnamed as a black fungus or even a mildew such as that shown in the photograph here.
Algae will devour your shingles and is also attracted to moisture.
There are four common types of roof fungus that cause the most problems whether it be damage to your home or your health.