Atlanta Roofing: Article About Mold and Algae Growth
Mold growth on the roof is a nuisance for homeowners in many parts of the United States, especially in climates that feature heavy amounts of rain. However, many homeowners easily mistake mold growth for what is actually algae, which commonly feeds on some of the materials featured in asphalt shingles, such as limestone. Since asphalt shingles is the most common type of roofing materials used in the country, homeowners are encouraged to take preventative measures to ensure their roof does not become damaged due to algae growth, such as contacting an Atlanta roofing specialist to thoroughly inspect the roof. Mold and algae growth may not cause significant amounts of damage to some types of shingles, but for specific types like wood, it can cause major damage if not properly treated.
One of the easiest ways to detect if there is an existing mold or mildew problem is to check for areas of discoloration on the shingles. Many homeowners spray a solution of bleach and water to the surface of the roof in order to kill existing mold, mildew or algae. However, this may not be the best solution, because bleach is toxic to other plants and can even cause damage to the shingles if it is left on too long or is not completely rinsed off once applied. While it may be tempting to cover plants in order to protect them from exposure, it may be difficult to completely prevent the solution from washing into the lawn after traveling through the gutters.
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Another way some homeowners attempt to remove mold or algae is by pressure washing the surface, which is also not recommended because it could cause significant damage to the shingles, and allow water to leak underneath them into the interior of the house.
While algae growth may not cause extensive damage to all types of shingles, it can look unattractive, and if not removed, it will only continue to grow and become an even bigger problem. There are specific ways roofing contractors can prevent mold or algae from growing on the surface of the roof, and clean it if it has already become a problem. Contractors may install zinc strips along the ridge line or underneath the shingles, and ensure that any debris is properly removed from the surface of the roof. They may also use a strong cleaning product that does not require rinsing after spraying, which could also prevent future growth from developing. Sometimes cleaners like these might take several weeks to work, however, so roofing contractors will typically only choose this route if it will not cause further damage to the roof in the meantime.