Black Streaks On Roof

As the blue green algae.

Black streaks on roof.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Here s what they are and what to do about them. It feeds on the limestone filler in your asphalt shingles. The black streaks are also known as black algae or roof mold.

This blackish algae creeps it way across neighborhood roofs gradually turning your home s asphalt shingles an ugly dark brown or black. It s also known as blue green algae in the roofing business. 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. The algae feed off of the limestone within the roof shingles.

If you re seeing black streaks running along your roof chances are you ve mistaken them for dirt or even mold. Algae arrive on the rooftop through the air in the form of spores or clumps of cells. What are those ugly black streaks on my roof. Black streaks on your roof indicate the presence of algae known as gloeocapsa magma.

The streaks are caused by a type of algae known as gloeocapsa magma. Although it may look like mold or fungi these unsightly black streaks or smear like stains may indicate a type of roof algae known in technical terms as gloeocaspa magma. Black streaks on shingled roofs are a common though mysterious sight. Believe it or not those black streaks only appear on roofs in certain areas of the country.

Those that tend to be the most humid furthermore they will only appear on the north side of the roof. Black streaks on roof. Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. While it can be displeasing to look at gloeocapsa magma can impact your roof far beyond its aesthetics.

The most common type is known as gloeocapsa magma also known as blue green algae. They re actually algae otherwise known as gloeoapsa magma and they are as nasty as they are resilient. The first thing to note is that what you re seeing is the result of a cyanobacteria known as gloeocapsa magna. While not immediately damaging they can prematurely age shingles.