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Wilmington Roofing: Article About Algae Proofing A Roof

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Homeowners who live in Southern states must face conditions and issues that arise due to living in a warm, humid environment. Algae, one issue homeowners are facing everywhere, is more prevalent in the South due to the warmth and humidity. When considering roof installation, a homeowner may want to speak with a Wilmington roofing specialist about algae proofing the roof.

Every homeowner is familiar with the black streaks that run down the roof. Those streaks signify large amounts of a specific algae, Gloeocapsa magma. Gloeocapsa magma is a cyanobacteria that consists of a cluster of algae spores. These spores travel with the wind. When they encounter an asphalt roof, they attach and begin to feed.

The particular draw of asphalt roofing is that Gloeocapsa magma feeds off the limestone within the shingles. Limestone is manufactured in shingles in order to strengthen them. Unfortunately, Gloeocapsa magma thrives off limestone, so limestone rich shingles are an excellent food source. Additionally, a warm, moisture rich environment encourages its growth. As it grows, it consumes more of the limestone, causing the shingles to deteriorate. Finally, as the sun beats down on the algae, it secretes a brownish protective covering against the sun's ultraviolet rays. This is the brown streaking that is seen on roofs.

The roofing experts at The Roof Maker of Wilmington NC can assist you with any questions regarding metal roofing or roof maintenance.

To combat algae growth, manufacturers make shingles that are algae resistant. These shingles prevent algae from growing on the roof in the first place. These algae resistant shingles have copper granules embedded in the asphalt along with the limestone granules. Some manufacturers make shingles out of zinc, which is algae resistant, too.

Some experts suggest placing a copper or zinc strip along the roof ridge. As rain water hits the strip, zinc or copper carbonate is created and runs down the roof. This hinders the growth of algae. With this method, a long, thin copper or zinc strip is nailed along the roof ridge or inserted under the row of shingles at the top of the roof.

Some manufacturers make zinc ridge vents. These vents function the same at zinc and copper strips along the roof ridge. When it rains and a chemical reaction occurs, zinc carbonate runs down the roof and halts the growth of algae.

Algae is a real issue for homeowners. Several options are available to hinder algae from forming on the roof. A homeowner must decide whether to algae proof the roof and, if so, how to go about it.

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