Even if it dries out it can come back to life when rain or moisture appears.
Fungal growth on roof shingles.
When algae and fungus get together they form something new lichen.
2 here are a few bleach free chemical treatments that can help keep fungus under control.
How to identify prevent black algae growth and stains on roof surfaces.
This article explains methods for cleaning off and preventing future roof stains due to algae or black fungal growth or green algae on roof shingles the effects of these conditions and how to cure or prevent them.
Algae and occasionally fungal growth discolors roof shingles.
Chemicals brushes washing power washing roofs.
As you can see the alga gets on your roof easily enough the wind just has to blow in the right direction and there it is.
It is sprayed on and allowed to dry without rinsing.
The standing water and humidity the rapidly growing spores and wood rot these are quick and fertile breeding places for mold.
Spray and forget is a new product that offers a long term solution to fungus problems.
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.
Advice about roof cleaning methods.
Once on the roof lichen cannot easily be removed.
How to remove mold from roof it s not difficult to remove mold from the shed roof.
New asphalt roof shingles are available with an inclusion of chemicals that resist moss lichens algae and even fungal growth.
Mold and mildew growth.
Resist does not mean moss proof or lichens proof however for shingles subject to difficult conditions such as extensive shade under trees and lots of organic debris left on the roof surface.
Once it s off you also.