Quote:
Originally Posted by RLW
My company has tried this on about a dozen garages as we didn't want to experiment on large homes and found over 7 years that this DOES NOT WORK and a waste of good money as copper is very expensive nowadays. Clearing the area for more sun lite also doesn't work as the moss just keeps coming back. Some shingle manufactures supposedly have come up with some type of a new ingredient that stops this condition.
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I believe that the ingredient is either copper or zinc granules depending on the manufacturer.