Roof Cleaning Annapolis Maryland by AccuWash - Cleaning Talk - Professional Cleaning and Restoration Forum
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post #1 of Old 04-08-2011, 11:30 AM Thread Starter
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Roof Cleaning Annapolis Maryland by AccuWash

Upon first look this roof looked like there was only gloeocapsa magma growing on it. Those black streaks were not longer visible after a strong roof treatment. After the roof cleaning, visible dead lichen appeared as light brown spots. As lichen and moss put roots into the asphalt shingles around the granules, we do not recommend scraping the lichen or moss off the roof. Our goal is to prolong the life of the roof, which means leaving as many granules as possible on the roof shingles. As the lichen/moss is now dead and no longer harming the roof, the wind and rain will break the lichen/moss at the root level, leaving those precious granules on the roof.
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