Bye-Bye Black Streaks: Understanding and Removing Roof Stains
As a homeowner in New Hampshire, you may have noticed unsightly black streaks or stains on your roof. These stains can not only impact the curb appeal of your home, but they may also indicate a larger issue with your roof's health. In this article, we'll delve into what these black streaks are, what causes them, and most importantly, how to properly get rid of them to restore your roof's appearance and protect its longevity.
Understanding what those black streaks are.
The black streaks on your roof are most likely caused by algae growth. Specifically, it's a type of algae called Gloeocapsa magma, which tends to thrive in humid and moist environments, making New Hampshire's climate conducive to its growth. This type of algae can spread and form dark streaks or patches on your roof, giving it a dirty and aged appearance.
Algae growth on your roof is not just an aesthetic issue. Over time, it can eat away at the shingles, causing them to deteriorate and potentially lead to leaks and other costly damages. Thus, it's crucial to address this problem promptly and effectively.
How do I get rid of the black streaks?
When it comes to removing black streaks from your roof, it's important to follow the right methods and avoid damaging your shingles. Here are some do's and don'ts to consider:
DO’s:
Use a Roof-Safe Cleaning Solution: Avoid using harsh chemicals or power washing, as they can damage your shingles. Instead, opt for a roof-safe cleaning solution that is specifically designed for removing algae and stains from roofs. Look for solutions that are eco-friendly and biodegradable to minimize any potential harm to the environment.
Follow the Manufacturer's Recommendations: Different roofing materials may require different cleaning methods. Always check the manufacturer's recommendations for cleaning your specific type of shingles. Follow their guidelines to ensure you don't void any warranties or cause unnecessary damage.
Apply the Cleaning Solution Properly: When applying the cleaning solution, make sure to saturate the affected areas thoroughly. Use a low-pressure sprayer or a soft-bristled brush to gently scrub the stains. Avoid using excessive pressure or abrasive tools that can cause shingle granules to dislodge.
Rinse Thoroughly: After applying the cleaning solution, rinse your roof thoroughly with water to remove any residue. Use a hose or a low-pressure sprayer to rinse from top to bottom, following the natural flow of water on your roof.
DON’Ts:
Use Bleach or High-Pressure Washing: Bleach and high-pressure washing may seem like a quick solution, but they can cause more harm than good. Bleach can damage shingles, strip away the protective granules, and harm your landscaping. High-pressure washing can also dislodge shingle granules and weaken the integrity of your roof.
Ignore Safety Precautions: Roof cleaning can be dangerous, especially if you're not experienced with working at heights. Always prioritize safety by using proper equipment, such as safety harnesses, and following safety guidelines. If you're not comfortable with roof cleaning, it's best to hire a professional roofing contractor who has the necessary skills and equipment.
Neglect Preventive Measures: To prevent future algae growth, consider installing zinc or copper strips at the ridge of your roof. These metal strips release ions that inhibit algae growth and can help keep your roof clean for longer periods.
Delay Roof Cleaning: It's important not to procrastinate when it comes to roof cleaning. The longer you wait, the harder it may be to remove the stains and restore your roof's appearance. Regular maintenance and cleaning can help.
When the time comes for a new roof, if your shingles are prone to algae, we recommend that you consider a shingle with algae-resistant granules, such as CertainTeed’s shingles with StreakFighter ® Algae-Resistant Technology.
If you are thinking about having your roof replaced, connect with the professionals at NH Grand Roofs to learn more and receive a free estimate. We are available by phone at 603-552-7152 or you can email info@nhgrandroofs.com about your roofing project. We look forward to connecting with you!
