How to Get Rid of Roof Stains

Address discolorations on your roofing as soon as you notice them. Roof stains aren’t always a simple cosmetic issue. Sometimes, they can also be an indication of something more serious. So, it’s important to distinguish between the different possible stains on your roof.

BLACK OR GREEN ROOF STAINS

Roof shingles have a tendency to grow a certain species of algae, which typically appears in streaks or patches of slime ranging from blue-green to dark black. Algae generally doesn’t pose a threat to the roof, and it’s not harmful the way mold could be.

According to experts, algae stains can be removed by using oxygen bleach. You can also opt for a solution of trisodium phosphate applied by low-pressure wash. However, for your safety, it’s best to enlist a professional roof cleaning service for this job.

When it comes to prevention, you can ask your roofer to add small sheets of copper or zinc to the high points on your roof. This way, water can wash the metallic atoms over the rest of your roof when it rains and in the process get rid of the algae.

WHITE OR YELLOW ROOF STAINS

This type of discoloration usually means water buildup from the air conditioner or evaporative cooler. It often occurs on the lower areas of the roof, and it can be quite obvious. Experts don’t recommend power washing or scrubbing the stain as this can only make the stain worse. What you can do, though, is to fade the stain using vinegar solution.

Christian Brothers Roofing is a trusted expert in residential roofing services. Our team is composed of trained and experienced professionals, so you can rest assured that your job will be done to a high standard. Call us at (502) 244-0208, or fill out our contact form to request a free quote.