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Don't Allow Algae to Ruin Your Roof

North Carolina summers can be hot and humid. This type of weather can make it easier to enjoy picnics or day trips to the beach, but the extra moisture in the air could wreak havoc on your home.

One of the potential dangers you could face when humidity levels rise is the growth of algae on your home's roof. Algae not only mars the beauty of your roof, but it can lead to serious damage that might result in water leaks.

You need to be vigilant in managing and maintaining your roofing materials throughout the year to keep algae growth at bay.

Types of Algae

There are two main types of algae that might plague your home's roofing system. Black algae is the least invasive of the two species. If you can see visible black streaks on your roof, these stains are likely caused by black algae.

Although black algae doesn't necessarily cause deterioration of your shingles, it can lower your home's value by creating an eyesore. Homes that are covered with light-colored shingles are especially vulnerable to the cosmetic damage caused by black algae.

The second type of algae that you need to be watching for as humidity levels rise is green algae or moss. Moss actually begins to grow into your home's shingles if left on your roof long enough. This causes the shingles to deteriorate prematurely, leaving your roof without the waterproof protection it needs to prevent serious leaks.

Cleaning Algae

Once you have identified algae growth on your roof, you must take immediate action. Algae can begin to colonize very quickly, exacerbating your problem.
Cleaning up algae infestations can be a challenge. Working on your home's roof can be dangerous, and you don't want to use any cleaning methods that might damage your shingles. An experienced roofing contractor will be able to utilize a specialized cleaning solvent to kill off algae growth and scrub away stains.
Homeowners often think that they can just use diluted bleach to address algae problems. Applying chlorine bleach to your roof could degrade roofing materials, cause your rain gutters to corrode, and kill off any vegetation on the ground as the bleach solution drips off your roofline. Always leave the cleaning of algae and moss to a professional to ensure your roofing system remains intact.

Preventing Algae Growth

Once your roofing contractor has cleaned up all the algae on your home's roof, you can take action to prevent algae from returning when humidity levels rise.

Copper has been proven to be detrimental to the growth of algae. If you are ready to replace your shingles, consider asphalt shingles that are coated with copper granules. If your shingles are still in good condition, consider switching out your aluminum flashing for copper flashing.

You can also have your roofing contractor install a strip of copper underneath the topmost row of shingles on your roof. As water condenses on your roof, it will run down over the strip of copper. Metal molecules will be carried across the rest of your roof along with the water as it drains into your rain gutters.

You might not be able to do much about the hot and humid North Carolina climate, but you can be proactive in preventing high humidity levels from damaging your home's roofing system.

If you are worried about algae and moss growth on your roof, call Carroll Roofing Company, Inc. We can assess growth patterns, clean your roof, and help you decide on preventative measures that will stop algae growth from damaging your roofing materials and detracting from the beauty of your home in the future.