Black Mold On Asphalt Shingles

Black mold on asphalt shingles is ugly.

Black mold on asphalt shingles. 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. The black roof stains are caused by a form of algae that has been around for years typically found in the woods on. 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.

The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma. You clean it and it returns year after year. Mold stains can form on roof shingles that are in permanent shade. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

Though often attributed to an accumulation of dirt defective shingles mold or mildew. You may also worry that mold growth will harm your asphalt shingles and reduce the roof s lifespan. Black mold stains streaks and clumps of moss growing on the roof look unsightly. The black streaks are also known as black algae or roof mold.

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. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. Black roof shingles are typically waterproof. Granted some of it could be mold but what is spreading like wildfire is gleocapsa magma.

Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. 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. You can also opt for the three tab shingle to save up to 50 on the cost.

These stains will discolor your roof and damage the shingles over a period of time if left alone. Here s why algae grows on roofs. Asphalt shingles tend to be the least expensive of any type and they are widely available. The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores.

The algae feed on the limestone in shingles. No one likes having to buy a new roof much sooner than anticipated. In reality what you are seeing is not black mold but a bacteria that is called 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.