Can have moss and algae accumulate on their roofs.
Green algae on roof tiles.
The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Roof algae generally have a black green hue.
The green color comes from chlorophyll which is the same substance that makes plants green.
The algae can cause black or gray streaks that seem to run down your roof.
It s actually just a blue green algae spread by airborne spores.
Those places that receive more rainfall and have sustained high levels of humidity have more moss and algae growth as the moss and algae need water to grow and multiply.
How to get rid of algae on the roof.
You may think you have roof algae when really you have moss mildew or mold.
Green off best roof cleaner for mold.
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.
Some of my readers came forward with suggestions and a few companies also supplied information helpful to this research.
As a matter of fact they have a really strong line up of products among which is the algae remover which is one of its better creations.
What is roof algae.
Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.
For the purposes of this article the terms mildew fungus algae and moss.
As we said about green algae on roofs the presence of these black fungal or algal stains on the roof is an indicator that this roof area is in a shaded spot where you may want to be alert for development of moss or other roof problems but the level of damage from the black fungus or algae is probably low even less than that caused by lichens.
Living in a humid area of the country like florida you ve probably seen your asphalt shingle roofs with unsightly dark streaks on them.
The black streaks on your roof don t appear for everyone they usually only appear on roofs in humid parts of the country.
Since starting on a quest for the ideal method of cleaning fungus and algae from roofs i have contacted dozens of individuals and companies.
People who live in all parts of the nation and have roofs made from all sorts of materials wood metal asphalt clay or concrete tiles etc.
Green off as many of you probably heard is also one of the well known manufacturers of various household products.
A blue green algae known as gloeocapsa magma could be the reason you have the algae which is spread by airborne spores sometimes it can also be caused by an accumulation of mildew mold dirt or defective shingles.
