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Cleaning Moss-Algae of Cedar Roof

belle123
13 years ago

We have an older cedar roof that has a few years of life left. There are several areas that have moss or algae growing where the roof is shady. Also, the roof is almost black. How can I safely clean the roof without damaging the cedar shingles?

Thanks in advance for your help.

Here is a link that might be useful: Photo of Home

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