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Old 02-05-2013, 03:27 PM
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Certified MD Roof Cleaner Certified MD Roof Cleaner is offline
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Join Date: Aug 2010
Location: Maryland
Posts: 41
Maryland Roof Cleaning

You may also notice the zinc strips on the roof pics above. We are often asked by our Maryland roof cleaning customers, if installing zinc strips after the roof cleaning will prevent the black roof stains from returning. Our answer of course is no. Although the zinc strips may be somewhat effective the first foot or two under the install, they will not keep your roof clean.
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