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Black Streaks on Your Roof? Here’s What You Need to Know and Do

If you've noticed black streaks on your roof, you’re not alone. These streaks are common, especially on asphalt shingles. At Exterior Property Experts, we provide specialized treatments that restore your roof’s look and keep algae from coming back.

The Cause of Black Streaks

Roof stained by algae (Gloeocapsa magma), which can damage shingles.

Black streaks are usually caused by Gloeocapsa magma, a hardy algae species that feeds on the limestone in asphalt shingles. While it doesn’t cause immediate damage, it can create conditions where moss or lichen may start to grow, leading to serious roofing problems.

Professional Roof Treatment and Maintenance

  1. Initial Cleaning: Our team uses a soft wash technique to safely remove algae without damaging shingles. This process targets algae at the root, eliminating the need for high pressure or harmful chemicals.

  2. Preventative Care: Regular inspections and maintenance help identify early signs of algae growth. We recommend scheduling routine cleanings to keep your roof looking its best and to extend its lifespan.

Additional Steps to Maintain a Clean Roof

  • Regular maintenance, like trimming nearby trees and ensuring gutters are clean, helps prevent moisture accumulation that encourages algae growth.

  • Install copper or zinc strips along your roof’s peak for an added algae deterrent, as these metals inhibit growth when they dissolve in rainwater.

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With Exterior Property Experts, you’re guaranteed a roof that looks fresh and clean, and stays that way for longer. Our treatments are customized, eco-friendly, and effective in restoring your roof’s natural color.

CALL THE DEDHAM PRESSURE WASHING EXPERTS FOR A SPOTLESS CLEAN!

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