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St Louis Roofing: Article About Removing Blue Algae

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In the past, homeowners in the Southern states were the only ones who really had to worry about getting blue algae on their roofs. The large amount of rain and humidity in these areas was perfect for algae growth. However, blue algae has been rapidly reproducing, and homes across the United States are now finding blue algae on their roofs.

Blue algae thrives in moist areas and prefers to consume limestone or products containing limestone such as newer asphalt shingles and exterior paints.Asphalt shingles now contain higher levels of limestone because manufacturers wanted to remove the asbestos from the shingles for health reasons while maintain a fire retardant quality to the roofing materials.

Removal of blue algae from the roof is important.Over time, blue algae can eat bare spots into the shingles that will reduce their effectiveness to protect the structure and security of the roof.

There are specific cleaners that should be used by professionals to remove blue algae from the roof. These cleaners also leave a residue on the roof to prevent further growth. A professional St Louis roofing company can easily clean and treat the roof of a home.

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Once removal of the blue algae is complete, an inspection of the roof should be conducted. This will ensure that the algae did not leave any damage to the shingles, and if it did, the repairs can be made immediately before further damage occurs.

Homeowners may also need to have the exterior of their home cleaned after the roof has been treated. Blue algae leaves black stains on any area where it attaches itself or where the algae has died.

Black stains on a roof or on the exterior paint of the home, especially where rainwater runs down from the roof, is a positive sign that there is blue algae growth present. The exterior paint may need to be repainted if the algae growth embedded itself into the paint too far and cannot be removed with cleaning.

Although blue algae prefer to attach itself to asphalt shingles, homes with tile, clay or even concrete shingles can experience algae growth. Algae growth most commonly occurs in areas of the roof that faces north or is shaded by trees or other buildings that keep it shaded. The growth will spread to other areas of the roof at a rapid pace, unless the area is exposed to direct sunlight for extended periods of time each day.

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