Have you noticed dark streaks or greenish spots taking over your roof? Those unsightly stains are often the result of roof algae — a type of cyanobacteria that thrives in warm, humid environments. Left untreated, this algae can cause dark streaks or blue-green spots that only worsen over time as it grows, dies, and regrows. While it might seem like a minor cosmetic issue at first, this algae can compromise your roof’s structural integrity, reduce your home’s curb appeal, and even impact your energy efficiency.
The good news? You can mitigate these risks by addressing algae growth as soon as it appears. Let’s take a closer look at the effects of roof algae and the steps you can take to remove and prevent it.
What Is Roof Algae?
The blue-green algae that grows on roofing systems feeds on the limestone filler found in many asphalt shingles. Once it takes hold, it spreads rapidly, creating dark streaks and stains on your roof.
This algae is airborne and typically spreads through spores, making it easy for a neighboring home’s roof to pass the problem along to yours. It also tends to grow on the north-facing or shaded areas of your roof, where moisture lingers the longest. While roof algae doesn’t cause immediate structural damage, it can lead to long-term problems if left unchecked.
How Algae Affects Your Home’s Roofing System
When homeowners first hear that algae growth isn’t harmful to their family’s health, they sometimes wonder why they should care about getting rid of it. We have four major reasons why you should invest in the removal of algae from your home’s roof:
Reduced Curb Appeal
Dark streaks and greenish spots make your home look aged and unkempt, detracting from its visual appeal. This can be particularly problematic if you’re planning to sell your home, as potential buyers might view the algae as a sign of neglect.
Damage to Shingles
Over time, algae can weaken the protective granules on your roof shingles, which are essential for reflecting sunlight and protecting your home from UV rays. This degradation can lead to premature aging and the need for costly roof repairs or premature replacement.
Increased Energy Costs
By reducing the reflective properties of your roof, algae causes it to retain heat. This makes your home hotter in the summer and forces your air conditioning system to work harder. The overall result is a hefty spike in your energy bills.
Moss and Mold Growth
Algae often creates a hospitable environment for other growths like moss and mold, which can further damage your roofing system and create potential health hazards inside your home.
5 Ways to Prevent Roof Algae
Don’t let algae be the reason you have to pour your hard-earned money into frequent roof repairs or full replacement. Instead, prevent future algae growth with these simple and effective tips:
- Trim Trees Around Your Home: Overhanging branches provide shade and trap moisture on your roof, which leads to the perfect environment for algae to thrive. By trimming trees and increasing sunlight exposure to your roof, you can help keep algae at bay.
- Regularly Schedule Roof Cleaning: Routine roof cleaning removes algae, dirt, and debris before they can become significant problems. Our team at Lee & Cates Surface CPR will use specialized techniques to eliminate roof moss and algae while being gentle on your shingles.
- Care for Your Gutters: Clogged gutters can cause water to back up onto your roof, creating a damp environment where algae loves to grow. Make sure to stay on top of gutter maintenance for proper drainage. If you need help reaching all the nooks and crannies, ask our professionals for a gutter cleaning service.
- Install Algae-Resistant Shingles: Many of today’s shingles come with algae-resistant properties, such as copper or zinc granules. These materials inhibit bacterial growth and are an excellent choice if you’re planning to replace your roof.
- Take Care of Repairs Immediately: Damaged shingles or flashing can allow moisture to seep into your roof, creating ideal conditions for algae. Addressing repairs promptly not only prevents harmful growth but also extends the lifespan of your roof.
Stop Algae Growth Before It Starts With a Self-Cleaning Roof Coating
One of the most effective ways to prevent roof algae is by investing in a roof coating like the DSS Reactive TiO2 coating. It has self-cleaning properties that actively inhibit the growth of algae, mold, and other contaminants. How does this work? Well, when exposed to sunlight, the coating’s titanium dioxide (TiO2) reacts to break down organic pollutants and harmful substances in the air, keeping your roof cleaner for longer. How cool is that?
Of course, we can’t forget to mention that this coating is also environmentally friendly and safe for use around your family and pets. Get peace of mind about your roof’s protection against algae growth and other environmental contaminants by talking with the experts at Surface CPR.
For the Ultimate Protection Against Roof Algae, Call Surface CPR
When it comes to roof algae, your best defense is a good offense. By taking proactive measures like scheduling a professional roof cleaning, caring for your gutters, and investing in a self-cleaning coating, you can keep your roof looking its best and avoid costly repairs down the line.
Contact Lee & Cates Surface CPR to schedule a consultation and learn more about our algae removal, cleaning, and protection solutions. We look forward to keeping your roof beautiful and durable for years to come!