Keeping a clean roof does more than just make your home look great, it extends the life of that same roof. Since it’s expensive to replace a roof, making it last is probably a first priority. Regular cleaning will accomplish that.
There are a lot of reasons why a roof gets dirty. If there are a lot of trees around it, leaves from the tree fall, and shade from the trees block the sun from drying any moisture left on the roof. That moisture allows organisms like algae, mold and mildew to take root on the roof. That taking root leads to damage and deterioration of the roofing material. The roots of algae like Gloeocapsa Magma break down roofing shingles by feeding on it. No matter which type of living organism is living on it, they also absorb heat. That means higher costs to cool your home.
So how does it happen? The algae spores land on the roof and puts down roots. The roots then breakdown the roofing materials, things like limestone in the granules on shingles, for food. When the roofing materials break down, water can then leak into the wood below the shingles. Eventually leaks will cause damage to the interior of your home. Not to mention that the algae, mold or mildew will follow the water into the home and infest drywall and cause serious health issues for you or your family. Fixing all of that is incredibly expensive. Having a professional come and regularly clean your roof will save you that huge expense.
The average roof, depending on the materials it is made out of, will last about 20 to 30 years. One that isn’t kept clean can have that lifespan easily cut in half. Don’t chance it and have your roof cleaned.