Once on the roof lichen cannot easily be removed.
Fungus roof shingles.
Even if it dries out it can come back to life when rain or moisture appears.
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.
Mold on roof jan 30 2018.
The first one we will talk about is algae.
Algae will devour your shingles and is also attracted to moisture.
This fungus is particularly damaging to the roof itself when not taken care of as soon as it s noticed.
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.
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.