Moss Resistant Asphalt Shingles?

Is there such a thing as moss resistant asphalt shingles? The Pacific Northwest is home to some of the mossiest roofs in the nation. Moss is the true green roof, or is it?

Many asphalt composition shingles are now made to control the algae and lichens that eventually attach to your roof. These micro organisms will also promote the growth of moss. Controlling the growth of these micro organisms will help greatly reduce the growth of moss. The moss will not be eliminated but the growth will be less than if your asphalt shingles did not have the algae resistance.

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