Algae tend to grow in humid conditions and some of the new fiberglass shingles include limestone for heft, which is a favorite food of many strains of algae. If you are facing a situation, where you might think that the roof shingles are going to need to be replaced soon call a reputable roof cleaner to see if your roof really needs to be replaced or just cleaned. Professional roof cleaners will definitely not try to sell you a roof if you don’t need one. They are only trying to help with preventative home maintenance.
Killing the algae will benefit you as a homeowner in many ways. A clean algae free roof will cause your roof to last longer, be more energy efficient, and make your home more presentable especially if it is for sale. And best of all, you won’t get one of those embarrassing letters from your homeowner’s association telling you to get your roof cleaned.