The presence of water, humidity, and sunlight on your new roof can easily lead to algae growth. This bacteria commonly found in lakes won't necessarily damage the structure of your roof. It can, however, trap moisture against the shingles, which can cause problems, and negatively impact your home's overall appearance. Here are the best ways to prevent its development.

How to Prevent Roof Algae 

1. Request Algae-Resistant Shingles

If your new roof hasn't been installed yet, ask your contractor about algae-resistant asphalt shingles. These feature the addition of copper granules to combat bacterial growth. Copper binds to algae cells, which causes them to rupture, leak, and die so that you don't have to invest in extra maintenance.

2. Add Sheet Metal 

If you don't have shingles with copper, you can still take preventative measures. Having strips of sheet metal installed below the ridge on each side of your roof can prevent algae growth. This method works by using rainwater to spread copper molecules across your shingles, where they interact with algae cells the same way they do with the first option. 

3. Chemical Treatments

You may have already noticed dark algae stains or slime starting to form on your existing shingles. You can remove this growth by having the roof chemically cleaned. Depending on the specific type of shingle your system features and the details of your warranty, different kinds of chemicals will be utilized to remove the stains. Repeating this chemical treatment annually can prevent algae from regrowing.

4. Prevent Standing Water

Water is a critical component of algae growth. Monitor your roof for any damaged spots that allow for water to pool and have these areas repaired right away. The longer puddles are allowed to linger, the more of a foothold algae growth will have when you begin removing the bacteria. Drainage issues can also lead to other problems, like shingle deterioration, warping of the wood decking, and the development of mold and moss.

If you're interested in new, algae-resistant shingles, you can count on Integrity Roofing & Contracting in Mobile, AL. These honest professionals offer a free estimate on their work, an accurate timeline, and guaranteed customer satisfaction with every new roof they install. Visit their website to learn more about their capabilities, or call (251) 604-6835 to set up an appointment.