When algae and fungus get together they form something new lichen.
Fungal growth on 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.
The standing water and humidity the rapidly growing spores and wood rot these are quick and fertile breeding places for mold.
Advice about roof cleaning methods.
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.
Chemicals brushes washing power washing roofs.
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.
Even if it dries out it can come back to life when rain or moisture appears.
New asphalt roof shingles are available with an inclusion of chemicals that resist moss lichens algae and even fungal growth.
Spray and forget is a new product that offers a long term solution to fungus problems.
Once it s off you also.
Once on the roof lichen cannot easily be removed.
2 here are a few bleach free chemical treatments that can help keep fungus under control.
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.
Though it is slow acting when compared to bleach solutions it can prevent mildew growth for years.
It is sprayed on and allowed to dry without rinsing.
How to identify prevent black algae growth and stains on roof surfaces.
We discuss algae and occasionally fungal growth that discolors roof shingles.