Wednesday, December 3, 2008

Shingle Cleaning and Roof Algae

It is a mission of mine to educate home owners across the country about roof algae and how it affects their home's value. I want home owners to be armed with the proper information when researching roof algae and when seeking a roof cleaning professional. Roof algae can lessen the longevity of your home's roof thus costing you money.

Roof algae is actually pretty common but most are uneducated about what it is. Roof algae is an airborne algae that can land on asphalt shingles. Once it attaches to the shingles it will feed on the crushed limestone that is used in shingle manufacturing. Each time it rains the algae is spread down the roof creating ugly black streaks and stains.

This phenomenon first usually appears on the north facing slopes of the roof. This is the side with the prevailing amount of shade and moisture. Roof algae can be cleaned using a low pressure chemical application which is actually recommended by the major shingle manufacturers.

Using these recommended low pressure cleaning methods will ensure the roof shingles are not damage like they would if a high pressure washer was used. They also warn against using a pressure washer to clean shingles. The high pressure removes the shingle granules which are there to protect the shingle. Shingles suffering from roof algae usually do not need replaced but only cleaned. Roof cleaning can restore your roof's appearance and normally costs a tenth or less of what a total roof replacement would cost.

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