Black Streaks On Roof Shingles

Algae dark stains on asphalt roof shingles.

Black streaks on roof shingles.

The most common type is known as gloeocapsa magma also known as blue green algae. Today s homeowner serves cookies to analyze traffic and better serve you. 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. 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. Dark streaks or roof discoloration caused by algae happens in varying degrees across the u s especially in areas exposed to warm humid conditions. 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. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma.

Preserve the appearance of your roof by removing black stains promptly. The black streaks are also known as black algae or roof mold. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. The algae feed on the limestone in shingles.

When that happens it is generally caused by mildew algae mold or dirt stains. But now this black algae is termed a roof shingle algae because of the annoying discoloration on a asphalt shingle roof. They re actually algae otherwise known as gloeoapsa magma and they are as nasty as they are resilient. It is most widespread in the eastern united states and is commonly found on roofs with northern exposure.

As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. Here s why algae grows on roofs. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.

This algae growth usually begins as small spots and then eventually becomes visible streaks. The streaks are caused by a type of algae known as gloeocapsa magma. Algae arrive on the rooftop through the air in the form of spores or clumps of cells. If you re seeing black streaks running along your roof chances are you ve mistaken them for dirt or even mold.

Black streaking on roofs is a common problem.