As a homeowner, you want your roof to be in the best condition possible—the same can be said about its appearance. When you notice unattractive black streaks on your roof, you may wonder "What the heck are these?" and "How do I make them go away?" When black streaks appear on your roof, it's understandable to feel confused and want them gone as soon as possible. This is why Northpoint Roofing Systems is here to help.
Our experienced team of professionals shares this comprehensive guide to everything you need to know about those mysterious black streaks on your roof—from why they appear to how to prevent them in the future.
What Are Those Black Streaks On Your Roof?
The black streaks on your roof are the growth of an algae known as Gloeocapsa magma. Not only can this algae make your roof unsightly, but it can also lead to other problems for your roof. Gloeocapsa magma is also known for:
Feeding on the limestone filler of asphalt shingles.
Surviving and thriving in harsh climates.
Creating the perfect environment for moss and lichens.
For these reasons, it's important to address the black streaks on your roof as soon as possible. Ignoring the streaks on your roof can lead to potentially irreversible damage.
Notice black streaks on your roof? Turn to the leading roofing company in Georgia, Northpoint Roofing Systems. We can remove algae from your roof, provide repairs, and even execute full replacements as needed.
Where Black Streaks Come From
Gloeocapsa magma has long been seen in the southern regions of North America, including Georgia. Due to its migratory nature and the ability to survive in a wide range of climates, this algae can now be found in the northern United States and even Canada.
Gloeocapsa magma commonly forms on areas of a roof that don't get direct sunlight. When the algae becomes airborne, it travels from roof to roof. So once a roof is contaminated, surrounding homes may be affected.
Why You're Seeing Black Spots or Streaks
Once the Gloeocapsa magma begins to feed on the limestone of your home's asphalt shingles, it grows, spreads, and becomes more visible. A single Gloeocapsa magma is invisible to the naked eye, so if you've noticed black streaks on your roof, that indicates the presence of millions of these organisms.
While algae are green, they have a shield layer that protects them from UV radiation. This gives it a black appearance. With this layer of protection, the algae can thrive, multiply, and spread—further driving the importance of immediate action.
Why Should You Remove Black Streaks?
Without the necessary information, one may think the black streaks on the roof are nothing to be worried about, but this isn't the case. Once you spot these black streaks on your roof and potentially your gutters, here is why they should be dealt with:
Appearance
The dark streaks on your roof can damage your home's curb appeal. Removing algae streaks from your roof will improve your home's overall aesthetic. This is particularly important if you plan on selling your home in the near future.
Future Prevention
When you remove the black streaks on your roof, you're also performing preventive maintenance. This makes future algae growth less likely in the long run.
Biosafety
Algae creates the perfect environment for other types of pests like mosquitos—posing a health risk to you and other occupants of the home. Remove the black streaks from your roof to keep everyone safe and comfortable.
Damage Control
Removing the black streaks from your roof is also an act of mitigating damage. The longer black streaks are present on your roof, the more likely they'll cause various types of damage to your roofing system.
How Do I Remove the Black Streaks on my Roof?
Eradicating the black streaks on your can be done at home, you'll just need the right resources. If you do plan to do this on your own, make sure you're wearing proper protective gear and keep safety in mind throughout the entire process. Having someone at your side is also a smart choice.
First, head to a nearby big box store and find spray-on algaecide. Before you start, cover your surrounding landscaping and remove any decorations or furniture. Be sure to do this project on a dry and overcast day because that is when algae are most active. Use a light-pressure garden sprayer to shower your roof with the algaecide. Let it sit for 20 minutes and then gently rinse with water.
Algae discoloration may not go away right off the bat, this is normal. It may take up to a month to see the results you're looking for. Once you remove the black streaks of your roof, it'll be in better shape to fend off growth in the near future.
It's also important to note that roofing projects can be dangerous to do at home without proper gear and protection. If you are uncomfortable scaling your roof to apply algaecide, don't worry. Northpoint Roofing is here to help. Our experienced roofing professionals have climbed many a roof and can safely and efficiently remove algae for you.
How Can I Prevent Algae From Regrowing on my Roof?
There are several ways you prevent the potential regrowth of algae. Here's what you can do:
Schedule Regular Roof Maintenance
Scheduling routine roof maintenance is one of the best ways to prevent algae growth in the future. By fixing issues before they get out of hand through cleaning and addressing nearby greenery where algae may spawn from, regular roof maintenance keeps your roof streak-free.
Invest in Algae-Resistant Shingles
You can prevent algae growth by investing in algae-resistant shingles. These shingles contain copper or zinc granules which are known for inhibiting the growth of algae.
Add Zinc or Copper Strips
Consider installing zinc or copper strips along the ridge of your roof. When it rains, small amounts of these heavy metals are released onto your roof to inhibit algae growth. These strips are a cost-effective solution to maintaining a roof free of algae.
Schedule an Inspection Today to Prevent Costly Future Repairs
If you've noticed black streaks on your roof, don't wait for their negative consequences to appear before removing them. Schedule an inspection today with Northpoint Roofing Systems and avoid the inconvenient complications of algae growth.