Black Streaks 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.

Black streaks on roof shingles.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. It is most widespread in the eastern united states and is commonly found on roofs with northern exposure. The black streaks are also known as black algae or roof mold. Algae arrive on the rooftop through the air in the form of spores or clumps of cells.

But now this black algae is termed a roof shingle algae because of the annoying discoloration on a asphalt shingle roof. If you re seeing black streaks running along your roof chances are you ve mistaken them for dirt or even mold. Today s homeowner serves cookies to analyze traffic and better serve you. Black streaking on roofs is a common problem.

It is not uncommon for roof shingles to turn black over time. The most common type is known as gloeocapsa magma also known as blue green algae. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. 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.

They re actually algae otherwise known as gloeoapsa magma and they are as nasty as they are resilient. When that happens it is generally caused by mildew algae mold or dirt stains. 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. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles.

Algae dark stains on asphalt roof shingles. This algae growth usually begins as small spots and then eventually becomes visible streaks. 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 streaks are caused by a type of algae known as gloeocapsa magma.

Here s why algae grows on roofs. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. Preserve the appearance of your roof by removing black stains promptly. The algae feed on the limestone in shingles.

While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely.