
The Hidden Dangers of Roof Mold (And How to Safely Remove It)
Struggling with organic growth on your home’s exterior? You are not alone. Mold, mildew, and algae spores are everywhere. If left untreated on your roof, they will multiply rapidly, causing severe damage to your property and potentially threatening your family’s health.
Visible black streaks or green fuzzy patches on your roof are more than just an ugly nuisance. They are a warning sign. Here is why roof mold is dangerous and how you can safely eliminate it.
The Health Risks of Mold Exposure
According to the CDC, exposure to mold can cause a wide range of respiratory and health problems. When exterior mold and algae are left to thrive on your roof, spores can easily find their way into your home’s HVAC system or attic space.
People who are sensitive to mold may experience:
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Generalized itchiness and skin irritation
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Red, watery eyes
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Chronic stuffy nose and sneezing
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Wheezing and shortness of breath
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Bronchitis and other severe respiratory reactions
Infants, children, and people suffering from asthma are at the highest risk for adverse reactions. Because mold spreads silently, prevention and routine exterior cleaning are the only ways to ensure your home remains a safe, healthy environment.
How Mold and Algae Destroy Your Roof
Those black streaks and brown spots on your roof are rarely just dirt. They are usually a highly destructive strain of algae called Gloeocapsa magma, which frequently grows alongside traditional mold, mildew, and moss.
These organisms thrive in damp, shaded environments. Once they settle on your roof, they immediately begin causing structural damage:
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Eating the Shingles: Algae and mold actively feed on the crushed limestone filler used to manufacture your asphalt shingles.
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Trapping Moisture: Fungi and moss act like a sponge, trapping water against your roof instead of allowing it to flow into the gutters.
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Lifting and Leaking: As roots grow into the shingle beds, they create divots and lift the shingles. This exposes the underlayment, allowing water to penetrate your attic and feed interior black mold.
By the time the damage is visible from the ground, your roof is already under attack.
The Solution: Pressure Free Roof Cleaning™
If you are looking to eradicate roof mold, never hire a contractor who uses high pressure. Blasting your roof with a standard power washer will strip the protective ceramic granules and instantly void your shingle warranty.
At A+ Power Washing and Roof Cleaning, we utilize a manufacturer-approved hot water soft wash system. Our Pressure Free Roof Cleaning™ method relies on specialized, heated cleaning solutions to achieve a 100% kill ratio on all mold, mildew, and algae right down to the root.
Ready to protect your home and boost your curb appeal? We provide the Best Service Anywhere™ with a simple, 3-Step Hassle-Free Experience™.

