Black Streaks On Asphalt Shingle Roof

The black streaks are also known as black algae or roof mold.

Black streaks on asphalt shingle roof.

Technically the black streaks on roofs are a form of algae known as gloeocapsa magma. Wind warranty of 150 mph. Though often attributed to an accumulation of dirt defective shingles mold or mildew. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Black streaking on roofs is a common problem. 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.

Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home. But now this black algae is termed a roof shingle algae because of the annoying discoloration on a asphalt shingle roof. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. Here s why algae grows on roofs.

Roofing manufacturers have tackled the problem of roof algae by creating shingles containing copper which is deadly to algae. Algae growth on asphalt shingles. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. If a roof replacement is outside of your budget roof maxx can help extend the life of your asphalt shingle roof by up to 15 years and save you 85 on what a replacement would cost.

Why are there dark streaks on my roof. Black streaks on shingled roofs are a common though mysterious sight. As the blue green algae. While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely.

Here s what they are and what to do about them. Algae may be mistaken for soot dirt or tree droppings most of which typically produce only localized discoloration. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. Algae growth may cause discoloration on roofs resulting in brown or black streaks on a rooftop.

The streaks look like mold but they re actually algae colonies that form in your shingles and feed on moisture and the limestone filler agents in the shingles. Replacing the shingles on your roof just because you have black stains is not necessary however and you should be suspicious of any roofer that suggests roof shingle replacement as the only solution to your algae problem. The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores. While not immediately damaging they can prematurely age shingles.