Black Streaks On My Roof

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

Black streaks on my roof. Black streaks on shingled roofs are a common though mysterious sight. As the blue green algae. Why you re seeing black spots or streaks. What are the black streaks on my roof.

When the algae become airborne they travel from roof to roof. You ll typically see gloeocapsa magma forming on areas of your roof that don t receive direct sunlight. The most common type is known as gloeocapsa magma also known as blue green algae. 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.

In about two weeks i noticed a significant improvement in the roof and a week or so later i would say 75 of the streaks were gone. Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. Here s what they are and what to do about them.

The algae feed off of the limestone within the roof shingles. Those that tend to be the most humid furthermore they will only appear on the north side of the roof. While not immediately damaging they can prematurely age shingles. What are those ugly black streaks on my roof.

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. A roofing contractor just tried to sell me a new roof for 10 700. There were visible dark streaks that made me think i needed to replace my roof to improve the appearance of my house. Algae growth may cause discoloration on roofs resulting in brown or black streaks on a rooftop.

I tried this product on the north side of my roof about two months ago. Algae may be mistaken for soot dirt or tree droppings most of which typically produce only localized discoloration. My new owemins corning roof started turning black from original grey color 5 years ago. Technically the black streaks on roofs are a form of algae known as gloeocapsa magma.

Roof is now 8 years old. The black roof stains are caused by a form of algae that has been around for. Once the algae have infested your roof you ll see black spots begin to form. Believe it or not those black streaks only appear on roofs in certain areas of the country.

Algae growth on asphalt shingles. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Why are there dark streaks on my roof.