Millions of homeowners across the United States have noticed the appearance of roof mold on their shingles, but relatively few of them think that anything can or should be done about it. The common misperception is that organic growth on a roof is harmless and that most people won't notice it. These ideas couldn't be further from the truth. The fact of the matter is that roof mold can compromise the health both of your shingles and your family.
As for the integrity of your shingles, I can tell you that it can be very detrimental to let mold stains take over your roof. It's more than just a cosmetic issue because the mold is literally chewing up your shingles as it spreads. Some years ago the major shingle manufacturers figured out that they could make shingles more cheaply by using a crushed limestone filler in the process. This did in fact lower their costs but it created the unwanted side affect of roof stains because limestone just happens to be the food of choice for roof mold! So as the mold eats and expands what will happen is the granules will loosen and begin to fall off. The granules on your shingles do more than just give them their color. They're actually vital in reflecting sunlight and heat away from your home which keeps your attic cooler and reduces your energy bills. When you lose granules your roof can no longer deflect the sun's UV rays and your energy efficiency will suffer as a result. Therefore roof mold removal is vital to your roof's longevity.
But that's just the beginning of the story. What most people don't know is that mold on the exterior of your home, whether it be on your siding or your roof, can aggravate the suffering of household members who have allergies or asthma. You might think that these spores are harmless since they are outside but every time you open the front door and every time your air conditioner kicks on it's just another point of entry for mold and mildew spores. In short, if it's on the outside of your house then it's on the inside, too. Count on it. This problem can be managed, of course, by having your siding and roof cleaned at regular intervals.
Lastly, roof mold is a big deal because it's most likely ruining your curb appeal, no matter how spectacular the rest of your home's exterior looks. Maybe you've become accustomed to seeing it and it doesn't rattle you too much, but I can almost guarantee that when the time comes to sell your home it will be an issue for potential homebuyers. They'll see it as they pull into the driveway and that all-important first impression will be blown before they've even stepped foot in the house. In their minds they'll be wondering what the story is with the roof, if it will need replacing, if it's a health issue, etc. Why even allow it to become an issue to begin with? Ask any good real estate agent and they'll tell you that by removing potential question marks about a home before it goes on the market is vital to selling quickly and for the most money possible.
As you can see there are a variety of good reasons for addressing roof mold issues. When you consider that most professional roof cleaning companies will treat an average roof for less than $500 it makes you wonder why more people don't leap at the chance to have it done. To have such a major issue as roof mold completely alleviated in a few hours for such a low cost I don't know why anyone would even hesitate.