Fuzzy, green moss growing on your roof can lead to ugly, green stains. Algae can cause ugly, black stains and lichens can leave an ugly, white film. That’s a lot of ugliness on your rooftop. Roofs in regions with humid summers are even more susceptible to these organisms, and growth is more common on roof slopes that don’t get much sunlight. Algae usually won’t damage your roof, but moss and lichens can damage shingles and lead to wood rot and leaks when left untreated. This can severely shorten the lifespan of your roof.
Fixing an ugly roof and extending its life might be as easy as cleaning it. Unfortunately, many traditional roof-cleaning methods also potentially cause roof damage. Adam Quenneville Roofing & Siding in South Hadley, Massachusetts, recommends Roof Shampoo, a safe, effective roof-cleaning alternative.