Roof Has Black Streaks

The algae then thrive on the moist crevices of your asphalt tiles.

Roof has black streaks. If left untreated these unsightly black streaks can cause the premature degradation of your shingles. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. It s also known as blue green algae in the roofing business. The great news for homeowners is that the most common causesof these black streaks are algae called gloeocapsa magma.

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. What causes your roof to have black streaks. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. The streaks are caused by a type of algae known as gloeocapsa magma.

This algae growth usually begins as small spots and then eventually becomes visible streaks. Many home owners are surprised to discover that the once clean asphalt roof shingles have been slowly covered with a form of roof mold or mildew that appears as a light discoloration and spreads down the roof toward the gutters. While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely. Black streaking on roofs is a common problem.

Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. So early treatment can help add years to your roof. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. But now this black algae is termed a roof shingle algae because of.

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 black streaks are also known as black algae or roof mold. Here s why algae grows on roofs. The algae will worsen and become more noticeable each year trapping moisture and causing premature shingle aging and granule loss.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. The wind carries the spores of this algae onto your roof. What are the black streaks on my roof. In short those black streaks are called gloeocapsa magma.

Those black streaks on your shingles may look like problems with old age or damage but they are really caused by algae specifically gloeocaspa magma is usually to blame for those wavy dark shades that grow as the algae bloom spreads. The algae feed on the limestone in shingles. Thankfully it isn t harmful to your health like mold. The most common type is known as gloeocapsa magma also known as blue green algae.