You just had a brand-new roof installed, and it looks fantastic. But within a few years, you notice dark streaks creeping across the shingles, making your home look older and neglected. You try cleaning them, but the stains keep coming back.
What you’re seeing isn’t dirt—it’s algae growth, a common problem in humid areas like South Jersey. The black streaks are caused by Gloeocapsa magma, a type of blue-green algae that thrives in warm, moist environments. If left untreated, it can spread across your entire roof, ruining curb appeal and potentially affecting your home’s value.
This is where GAF StainGuard Plus™ Technology comes in. Designed to protect roofs from algae-related staining, it uses time-released copper technology to keep your shingles looking clean and beautiful for decades.
In this article, we’ll explore:
- How GAF StainGuard Plus™ Technology works
- Why algae stains are a serious issue for South Jersey homeowners
- The long-term benefits of algae-resistant shingles
- How RGB Construction can install a StainGuard Plus™ roof for lasting protection
If you want a roof that stays clean, bright, and algae-free, read on to learn why GAF StainGuard Plus™ is the best solution for your home.
Download – GAF StainGuard Plus™ Algae Protection Brochure
Roofs with StainGuard Plus™ technology have shown a 90% reduction in visible algae stains compared to untreated shingles.” – GAF Roofing Research
What Is GAF StainGuard Plus™ Technology?
Algae-free roof with GAF StainGuard Plus™ shingles.
The Science Behind StainGuard Plus™
Unlike traditional shingles that can start showing black streaks within a few years, GAF StainGuard Plus™ shingles are treated with copper-infused granules that continuously release copper over time.
This slow, steady release of copper is the key difference. Many algae-resistant shingles contain copper granules, but over time, the copper washes away, making the shingles vulnerable to algae growth.
StainGuard Plus™ shingles use time-release technology to ensure:
- Consistent algae protection for up to 25 years
- Even distribution of copper across the roof surface
- Longer-lasting stain resistance compared to traditional shingles
What Causes Roof Algae Growth?
Algae spores are airborne, meaning they can travel from roof to roof. Once they land on a damp surface, they start spreading. South Jersey’s humid climate, frequent rain, and shaded roofs make it the perfect breeding ground for algae.
The biggest contributors to algae growth include:
- High humidity levels, especially in coastal areas like the Jersey Shore
- Frequent rainfall, which keeps roofs damp for long periods
- Overhanging trees, which provide shade and trap moisture
- Older asphalt shingles, which lack algae-resistant properties
Once algae take hold, it doesn’t go away on its own. Without proper protection, homeowners are left fighting an endless cycle of cleaning, staining, and premature roof wear.
Why Algae Stains Are a Problem for South Jersey Homes
Hurts Your Home’s Curb Appeal
One of the biggest reasons homeowners in Cherry Hill, Camden County, and Gloucester County choose StainGuard Plus™ is to maintain their home’s appearance.
Algae stains:
- Make your home look dirty and neglected
- Reduce resale value, as buyers may assume the roof is old or damaged
- Are difficult to remove, often requiring costly chemical treatments
Can Lead to Roof Damage Over Time
While algae alone won’t destroy your shingles, it creates the perfect conditions for moss and lichen growth, which trap moisture and accelerate shingle deterioration.
If left untreated, this can lead to:
- Shingle curling and cracking
- Premature roof aging
- Increased risk of leaks
Raises Your Home’s Energy Bills
Dark stains absorb more heat from the sun, causing:
- Higher attic temperatures, making your home warmer in the summer
- Increased air conditioning costs, as your system works harder to cool the house
By preventing black streaks, StainGuard Plus™ helps your roof stay cooler, reducing energy waste and lowering your utility bills.
How StainGuard Plus™ Provides Long-Term Roof Protection
Time-Released Algae Protection
Traditional algae-resistant shingles lose their effectiveness after a few years because their copper content wears away. StainGuard Plus™ prevents this by slowly releasing algae-fighting copper granules over time, ensuring long-term protection.
Reduces Maintenance Costs
Many homeowners pay for professional roof cleaning to remove algae stains, but these treatments are temporary and expensive. With StainGuard Plus™, you:
- Eliminate the need for costly roof cleanings
- Prevent unnecessary wear and tear from power washing
- Extend the life of your shingles
Comes with a 25-Year Warranty
StainGuard Plus™ shingles include a 25-year limited warranty, guaranteeing protection against algae-related staining for decades.
When installed as part of a complete GAF roofing system, homeowners qualify for additional GAF warranties, offering even more peace of mind.
StainGuard Plus™ vs. Standard Shingles: A Comparison
| Feature | GAF StainGuard Plus™ Shingles | Traditional Asphalt Shingles |
| Algae Protection | Time-released copper for long-term resistance | No long-term algae resistance |
| Curb Appeal | Prevents black streaks, keeping the roof looking new | Susceptible to staining within a few years |
| Lifespan | Extends shingle life by reducing moisture retention | Deteriorates faster due to algae buildup |
| Energy Efficiency | Prevents heat absorption from black streaks | Dark stains increase cooling costs |
Protect Your Roof & Home Value Today!
Don’t wait for algae to take over. Call RGB Construction at (856) 264-9093 for a free consultation!
Why South Jersey Homeowners Should Choose StainGuard Plus™ Shingles
Ideal for Humid, Coastal Climates
South Jersey’s climate is perfect for algae growth, making algae-resistant shingles a necessity, not a luxury.
Increases Home Resale Value
A clean, streak-free roof makes your home more attractive to buyers. Real estate studies show that a well-maintained roof can add 5-10% to a home’s value.
Prevents Expensive Roof Cleanings
Without algae-resistant shingles, homeowners often pay for chemical cleanings every few years. StainGuard Plus™ eliminates this recurring cost.
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Why Choose RGB Construction for Your StainGuard Plus™ Roof?
Certified GAF Master Elite® Contractor
RGB Construction is a GAF Master Elite® Roofing Contractor, a certification awarded to only 2% of roofing contractors nationwide. This means:
- Expert installation by factory-trained professionals
- Exclusive access to the best GAF warranties
- Proven customer satisfaction and top-tier craftsmanship
Serving Cherry Hill and Surrounding Areas
With over 20 years of experience, RGB Construction has installed hundreds of algae-resistant roofs across South Jersey.
One homeowner in Mount Laurel, NJ, shared:
“After switching to StainGuard Plus™, our roof looks brand new, and we no longer worry about algae stains. RGB Construction did an outstanding job!”
Protect Your Roof with GAF StainGuard Plus™
Algae stains aren’t just an eyesore—they can hurt your home’s value, increase energy costs, and lead to premature shingle failure.
With GAF StainGuard Plus™ Technology, South Jersey homeowners can enjoy:
- A beautiful, algae-free roof for decades
- Lower maintenance costs
- Improved energy efficiency
- A stronger, longer-lasting roof
If you’re ready to upgrade to a cleaner, longer-lasting roof, contact RGB Construction today at (856) 264-9093 for a free consultation.
