Green Algae On Roof

Roof algae generally have a black green hue.

Green algae on roof.

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. Well there s a way to clean that off as well. Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight. It s actually just a blue green algae spread by airborne spores.

The algae can cause black or gray streaks that seem to run down your roof. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. As primordial photosynthesizers if you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

Here s what you do. You can also opt for the safer option of making your own solution. Both of these algae can be cleaned from the roof however the green algae is far easier to remove than the black algae. The green color comes from chlorophyll which is the same substance that makes plants green.

Algae is not a plant but an organism spread by spores. They are more of an aesthetic issue since they make the roof look horrible. Should i avoid chlorine. 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.

What is roof algae. It appears on the shingles in streaks that head down the roof pitch vertically. 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 green and black algae in my opinion are not harmful to the actual roofing material because they do not develop roots.

It causes the black stains you may see on your roof. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Algae will grow flush against the shingles and fixtures on your roof. Can moss and algae damage my roof.

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. It can be brown gray blue or green. Known as black algae or roof mold gloeocapsa magma is usually blamed on dirt accumulation mold and mildew or defective shingles. The way to clean off roof algae is to go ahead and mix up some oxygen bleach with water.

Some roofs also have regular green algae that comes from trees and things that are near the houses. The black streaks on your roof don t appear for everyone they usually only appear on roofs in humid parts of the country.