Roof Has Black Streaks

Black streaks on roof the first thing to note is that what you re seeing is the result of a cyanobacteria known as gloeocapsa magna.

Roof has black streaks.

The algae feed on the limestone in shingles. Those black streaks are actually blue green algae formally known by its scientific name. The great news for homeowners is that the most common causesof these black streaks are algae called gloeocapsa magma. The most common type is known as gloeocapsa magma also known as blue green algae.

The black roof stains are caused by a form of algae that has been around for years typically found in the woods on the north side of trees or on exposed rocks. The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss. This algae growth usually begins as small spots and then eventually becomes visible streaks. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

The black streaks are also known as black algae or roof mold. The streaks are caused by a type of algae known as gloeocapsa magma. What are the black streaks on my roof. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma.

If left untreated these unsightly black streaks can cause the premature degradation of your shingles. Black streaking on roofs is a common problem. But now this black algae is termed a roof shingle algae because of. What causes your roof to have black streaks.

It s also known as blue green algae in the roofing business. In short those black streaks are called gloeocapsa magma. Thankfully it isn t harmful to your health like mold. Here s why algae grows on roofs.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. So early treatment can help add years to your roof. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. It s actually a form of algae that feeds on the limestone filler used in the creation of asphalt shingles.

The wind carries the spores of this algae onto your roof. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. Although these dark spots and ugly black streaks on your roof may look like dirt mildew soot or mold what they really are is algae. While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely.