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.

Fungus roof shingles.

Mold on roof jan 30 2018. 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. The first one we will talk about is algae. Once on the roof lichen cannot easily be removed.

Even if it dries out it can come back to life when rain or moisture appears. 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. Scrubbing or power washing the lichen will only do more damage.

There are four common types of roof fungus that cause the most problems whether it be damage to your home or your health.