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Atlanta Roof Cleaners
3130 Ardley Rd. S.W.
Atlanta, Ga. 30311
(404) 509-2913

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Call today for a roof cleaner of roof stains and streaks on Asphalt Shingle roofs, Clay tile roofs, Concrete tile roofs and Slate tile roofs in Atlanta and the surrounding communities.

​Call today for a "Low Pressure House & Building Wash" to rid your property of unsightly  dirt and mildew stains and steaks.

  1. What's "Growing on and Eating My Roof"
    ​Algae, Fungus, Lichen and Moss. Refer to this article by GAF-ELK Technical Bulletin.

  2. Is the process used by Atlanta Roof Cleaners approved by the Roofing Manufacturers?
    Yes: A low pressure chemical solution recommended by GAF and Owens Corning and it is sprayed on affected areas for complete roof cleaning of asphalt shingles.

  3. Does Algae, Fungus and Lichen affect Asphalt Shingles? YES!
    Refer to this article by AAA Roof Technologies.

  4. What does the Roof Manufacturers say about Roof Cleaning "Algae Stains" on asphalt shingles?
    Refer to this technical report from GAF one of the nations top roofing manufacturers.

  5. What does the Asphalt Roof Manufacturers Association say about Roof Cleaning "Algae Stains" on asphalt shingles?
    Refer to this technical report from ARMA.

  6. Why is my Roof Dirty and my neighbor's Roof is not...?
    The airborne algae needs a shaded moist environment to grow in. If your neighbor's home gets high exposure to sunlight those conditions can't be met thus ... no algae growth on their roof. But what you may not know or see is the shaded side possibly in the back of their home does have algae stains on it? So if you are the neighbor without roof stains on the front of your home and you can see stains on your neighbor's home directly across from you look up at your home from your back yard ... ?? What do you see?

  7. What health issues can be caused by a algae stained roofs?
    Will a Dirty Roof Make You Sick?
    About the author: Dr. Victor H Morgenroth is a semi-retired adjunct professor of neurology at the University of Miami. He was a principal administrator in the Environment Health and Safety Division of the Organization for Economic Cooperation and Development for 20 years. Prior to that he was a Group Leader in the Toxicology Division at the Center for Food Safety and Nutrition in the US Food and Drug Administration (FDA).
    Having your roof cleaned actually makes sense because the dirt on roofs could actually be causing illness.​

    It isn’t just aesthetics. While people like to say that dirty roofs lower a property’s value and may make it hard to sell, the “dirt” on a roof actually shortens its life span and can even present a health hazard. Furthermore, the “dark stains” on a roof act as a sponge to absorb the sun's heat, which causes a rise in the temperature inside a home or building, creating higher air conditioning bills.

    The dirt isn’t just dust – It’s alive. Some of the black or very dark roof stains are caused by a resilient type of bacteria, Gloeocapsa magma (a type of blue-green algae commonly found in climates with warm, humid summers). The bacteria grows in standing water, as well as in our lakes and ponds. The algal spores are carried to our roofs from the water sources by the wind and birds, and then from roof to roof where it grows and feeds on the limestone filler in asphalt shingles and the real dirt on tile roofs maybe in some cases the tiles themselves. Worse still, as the algae grow, they retain water and foster the growth of other roof inhabitants.​

    The black stains are also very likely to harbor a number of molds or fungi. Unlike algae the fungi on our roofs lacks chlorophyll. They are unable to manufacture food from raw materials. So, it must get nutrition from some form of organic matter. To thrive, these heterotrophs, who used to be called saprophytes, also require a warm, humid environment.

    Fungi normally begin their life cycle as an airborne spore that settles on roofs, especially the asphalt-shingle ones. The spores on the northern exposure of the roof stand a better chance of survival because that portion of the roof is the last part to dry after a rain or morning dew. This raises the humidity on the surface of the shingle, thus creating a perfect feeding and breeding ground.​

    The tar used in roofing is fossilized, dead organic matter -- and an important food source for fungi. Asphalt, at the granule base, is normally consumed first. Once these granules dislodge, accelerated deterioration will occur. Ceramic granules represent the outer hard shell that protects against hail and other falling debris. Ceramic granules protect against damaging UV radiation and insulate the roof against extreme heat. So you can understand that their dislodgement by the growing fungal colonies can be detrimental to our roofs’ longevity. Surprisingly, the blue-green algae are also food for the fungi.​

    While not all mold (fungi) and algae pose a health danger, some are harmful, especially for us older folks, younger children and people who suffer from asthma and respiratory problems. Their spores, which are on your roof, can get inside your home because they end up on the driveway and walkways from rain, and are easily tracked inside. They can even be drawn into our air conditioning systems and eventually populate our ducts.​

    Different mold species can have varying health effects, but it is important to remember that any excessive mold growth needs to be taken care of, regardless of the species. Any excessive mold growth can lead to increased allergies, toxicity, and house/building structural problems

That's allot to read wasn't it ... but you learned allot too! Now call Atlanta Roof Cleaners for your roof cleaning, ​house wash and pressure washing to ensure that your property is not only clean but healthier!