The black streaks are also known as black algae or roof mold.
Black mold on asphalt shingles.
Here s why algae grows on roofs.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
In hot and humid climates like tampa algae growth on asphalt shingles can be a real problem.
Then you ll get a roof life of somewhere between 15 to 30 years.
As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
The algae feed on the limestone in shingles.
Asphalt shingles tend to be the least expensive of any type and they are widely available.
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.
Black mold on asphalt shingles is ugly.
Granted some of it could be mold but what is spreading like wildfire is gleocapsa magma.
You may also worry that mold growth will harm your asphalt shingles and reduce the roof s lifespan.
The black roof stains are caused by a form of algae that has been around for years typically found in the woods on.
Though often attributed to an accumulation of dirt defective shingles mold or mildew.
In reality what you are seeing is not black mold but a bacteria that is called gloeocapsa magma.
The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores.
Black roof shingles are typically waterproof.
Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home.
Many home owners are surprised to discover that the once clean asphalt roof shingles have been slowly covered with a form of roof mold or mildew that appears as a light discoloration and spreads down the roof toward the gutters.
If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
You can expect to pay about 90 per square.
If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
You can also opt for the three tab shingle to save up to 50 on the cost.
The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.
Black mold stains streaks and clumps of moss growing on the roof look unsightly.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside not to worry though because you can clean the mold off with basic household bleach and save.
You clean it and it returns year after year.
