All roofs are susceptible to algae and other forms of roof deterioration, but coastal houses are particularly susceptible due to wind and salt air. Green and black algae can be a major headache for homeowners. Algae not only makes a roof look bad, but will likely shorten its life as well.
What Is Fungus
Commonly called fungus, algae create unsightly dark brown, green or black streaking on shingles. Sometimes these streaks are mistaken for soot, dirt, moss or tree droppings. While regions with sustained humidity and moisture tend to be most at risk, people who live in all parts of the nation with roofs made from all sorts of materials are susceptible to moss and algae accumulation. In fact, all algae need to survive and thrive are air, water and a food source.
Cleaning Verses Replacement
Yes, you can clean your roof, but some methods of cleaning can cause unnecessary wear to the shingles. Many of today’s higher quality shingles have an algae-resistant barrier built-in. This barrier helps protect the roof from the unsightly streaks and maintenance hassles caused by algae. CertainTeed produces an asphalt shingle with an algae-resistant Streak-Fighter feature in the shingle. CertainTeed claims that specific raw material in the shingle protects it from the streaking and discoloration commonly caused by algae.
Final Thoughts
Check your roof regularly for steaks from algae. When you see they are starting to develop, it’s time to get it cleaned. Purchase a roof cleaning product to clean your roof or hire a roofing professional who can do this for you. When it becomes time to replace the roofing shingles, check out your options for a shingle with algae protection.
