Mold and Algae

Identifying algae on one’s roof should be an utmost priority of any homeowner. Roof maintenance can prevent hefty repairmen costs and can prevent health issues. Breathing in roof algae, fungus, mildew, moss, or mold, are health hazards. These hazards can lead to respiratory problems such as diseases, allergies, asthma, nausea, and vision problems.

The most common class of roof algae is Gloeocapsa magma- a bacterium that eats water and expels oxygen. Gloeocapsa magma are the black stains you may see on a roof. The black stains are buildups of algae that can prevent the sun from burning off the bacteria. Roof lichen is a combination of both algae and fungus.

What customers should look for


One of the first problems homeowners experience with roof algae has to do with appearance. Most homeowners only realize they have algae when it causes ugly black streaks, dark spots, or green mossy fuzz on the roofing system. Roof algae can significantly decrease curb appeal.

The worth of your home.

If a homeowner is trying to sell their home, they may run into issues if they have roof algae. Roof algae are signs that their roofing system could have considerable damage and may need replacing. Roof algae primarily reduces the lifespan of your roof over time by deteriorating the appearance of the roof. This can decrease their home’s resale value, until and unless they schedule repairs.

Algae and lichen can grow on their roof, staining it permanently and causing damage to the underlying structures.

Rot in the wood.

Wood rot. If moisture sinks down into the wood of their roof, they could have a serious problem on their hands. Standing water can soften and rot the wood, permanently compromising its strength and safety. Wood rot can lead to roof leaks, expensive repairs, and wood replacement.


Roof mold could cause real, lasting damage to your roofing system if left untreated. Another risk of moisture trapped in their roofing system is the development of real mold. Standing water and humidity, paired with growing algae spores, can be a breeding ground for harmful mold. Mold can pose serious health risks to their family.


Algae and lichen can adhere to a roof, cause permanent stains, and ultimately damage the underlying materials Untreated roof algae can spread damage to other structures..Algae spores can travel on the wind and easily attach to other structures on their property. Roof algae may start on their home, but it won’t be long until they notice similar growth beginning on the roofs of sheds, barns, and carports. It could even travel to neighbors’ homes, spreading the issue throughout the neighborhood.


Finally, but most importantly, roof algae can be harmful to one's health.

If algae turns into a mold or mildew problem, their family may inhale harmful microorganisms while spending time in their house or yard. The sooner roof algae is dealt with, the better for their health and safety.

Roof algae, fungus, mildew, moss, and mold could be harmful to their health in the long run.

Inhaling mold or mildew spores can cause respiratory issues, allergies, asthma, nausea, visual problems, and other health problems. Once you discover algae on their roof, you must act quickly.

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