Fungus Roof Shingles

Once on the roof lichen cannot easily be removed.

Fungus roof shingles.

Lichen is a photosynthetic fungus that has roots that wrap around the granules feeding on the nutrients of the gm and the filler in the shingles. Mold on roof jan 30 2018. Even if it dries out it can come back to life when rain or moisture appears. 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.

Black algae stains may be mistaken for but are not extractive bleeding a product cosmetic defect. 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. There are four common types of roof fungus that cause the most problems whether it be damage to your home or your health.

Scrubbing or power washing the lichen will only do more damage.