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Albany Roofers: Article About Roof Algae and Moss

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Many homeowners notice the development of black streaks and stains on their roofs. This is a common occurrence in warmer climates that experience long, humid summers. This growth is actually blueish green algae formally known as Gloeocapsa magma that is spread by airborne spores. These marks are most noticeable on roofs with light colored asphalt shingles. While this alga is not particularly harmful to a roof, it is a sore sight to behold and can affect the resale value of a home. For homeowners with question on this topic, expert Albany roofers are always available to provide assistance.

There are a few options to consider for removal of Gloeocapsa magma. The most effective method is with the use of a 50 percent bleach solution. Simply spray the roof with a low pressure mixture of water and bleach. Avoid the use of a pressure washer in close proximity to shingles because this can cause damage. The bleach will kill the algae growth, and the black or blueish green marks should clear up within a few days. In many cases, black algae stains will clear up almost immediately.

The roofers at Ideal Construction of Albany NY can assist you with any questions regarding roofing or windows.

Homeowners should be cautious in the application of this bleach solution because it can also kill nearby plants and bushes. To avoid harming the surrounding landscaping, be sure to rinse everything thoroughly with clean water afterwards.

Another option to rid a roof of algae is oxygen bleach. It is a more environmentally friendly option that will not discolor shingles or harm vegetation around the house. An oxygen bleach solution is not quite as strong as regular household bleach and will need to soak for 10 to 15 minutes to be most effective. A scrub brush or push broom can be used to work the solution into the algae. The roof can then be rinsed with clean water and the process repeated if necessary.

For homeowners who do not wish to use a bleach product on their roof, several products are manufactured specifically to remove algae from asphalt shingles. They can be found at most large home improvement stores. There are also several steps homeowners can take to prevent algae from growing in the first place or to prevent its reappearance. Believe it or not, asphalt shingles resistant to roof algae are available on the market today. These specialized shingles contain small amounts of copper or zinc, both of which are toxic to algae. Homeowners can also consider installing zinc or copper strips.

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