Black Algae On Roof

Here s why algae grows on roofs.

Black algae on roof.

We ve all seen a house with an exceptionally dirty roof at one point or another. The black spots discoloring your asphalt roof are more than likely the pervasive and prevalent algae known as gloecapsa magma. The black streaks are also known as black algae or roof mold. This is because of its dark pigment and tough outer capsule.

Gloeocapsa has the ability to form a protective darkly pigmented outer coating that shields the algae from damaging uv rays. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. Black streaks green or white spots round lichens mosses green moss that spreads across your roof. Why does this algae appear to be black.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Although mold can grow in your roofing materials if water gets trapped somewhere if you see any of the following on top of your roof algae are more likely your problem. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.

Fiddler roof cleaning has an excellent post on the dangers of roof mold and algae. It s probably not soot. These black roof algal stains are sometimes misnamed or misidentified as a black fungus or even a mildew. If you have dark streaks on your roof siding and other outside areas around your home they likely caused by a type of black algae called gloeocapsa magma.

Find out how to remove unsightly black stains from asphalt shingle roofs caused by an algae known as gloeocapsa magma that is spread by airborne spores. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. Although algae can be found on all types of roofing it tends to be most common on asphalt shingles.

This is what makes those unattractive black streaks on your roof. These roof invaders require a. The dangers of black algae streaks on roof to your home. Some black stains on asphalt roof shingles are caused by a black algae typically gloeocapsa magma.