Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Green algae on roof.
Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.
How to get rid of algae on the roof.
It s actually just a blue green algae spread by airborne spores.
It appears on the shingles in streaks that head down the roof pitch vertically.
The algae can cause black or gray streaks that seem to run down your roof.
Some roofs also have regular green algae that comes from trees and things that are near the houses.
Algae will grow flush against the shingles and fixtures on your roof.
Both of these algae can be cleaned from the roof however the green algae is far easier to remove than the black algae.
If you have green stains on your deck or siding it s probably due to either cholophyta algae green algae or a cyanobacterium related to gloeocapsa magma.
It can be brown gray blue or green.
The growths on the roof are cyanobacteria or blue green algae a phylum of organisms that has dwelt on earth for about 3 billion years.
Algae is not a plant but an organism spread by spores.
Just like the stark organic differences between algae and moss.
You can also opt for the safer option of making your own solution.
Known as black algae or roof mold gloeocapsa magma is usually blamed on dirt accumulation mold and mildew or defective shingles.
They are more of an aesthetic issue since they make the roof look horrible.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Well there s a way to clean that off as well.
The green and black algae in my opinion are not harmful to the actual roofing material because they do not develop roots.
While blue green algae can affect almost every roof on the market removing it can be a fairly easy task as all it takes is a little chemical cleaner.
The black streaks on your roof don t appear for everyone they usually only appear on roofs in humid parts of the country.
Common algae that form on roof surfaces including asphalt shingles and roll roofing include the algae shown above and gleocapsa magma a species that generally appears black on the roof surface but under some lighting conditions even on the roof gleocapsa magma can appear as a blue green color as might other algae genera species.
What is roof algae.
Can moss and algae damage my roof.
As primordial photosynthesizers if you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
Should i avoid chlorine.
The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen.
It causes the black stains you may see on your roof.
When it comes to removing algae from your roof you can opt to buy cleaning products from your local hardware store.
Here s what you do.