What Are the Best Algae-Resistant Shingles? (Top 4 Brands)
If you’ve ever noticed dark streaks or patches on your roof, especially on the shady side of the house, you may be dealing with algae growth. This type of discoloration not only impacts your home’s curb appeal but can also reduce the lifespan of your shingles.
Fortunately, many top roofing manufacturers offer algae-resistant shingles that help prevent this unsightly and damaging problem. But which ones are the best?
For over a decade, Rescue My Roof has been a leading educator in the roofing industry. We’ve helped thousands of homeowners find the perfect roofing materials for their homes. Now, we’re here to help you, too.
In this article, we’ll explore what algae-resistant shingles are, why they matter, and which brands lead the way in protecting your roof from algae.Ultimately, you’ll know which ones are right for you.
What Are Algae-Resistant Shingles?
Algae-resistant shingles are asphalt shingles infused with copper or zinc granules that inhibit the growth of blue-green algae (Gloeocapsa magma), the most common culprit behind black streaks on roofs. These granules release ions that create a hostile environment for algae, preventing it from taking root and spreading.
Why Algae Resistance Matters
In humid or shaded environments—especially in the Midwest or Southeast—algae growth is common. While algae doesn’t directly damage your roof like moss or mold, it can:
- Deteriorate your home’s appearance
- Reduce your home’s resale value
- Potentially affect the integrity of your shingles over time
Choosing algae-resistant shingles helps protect your investment and reduces the need for frequent roof cleanings or premature replacements.
Top Algae-Resistant Shingle Brands
If you’re dealing with algae growth and black stains, you’ve come to the right place. Here are the top four algae-resistant shingles that can help defend your home.
1. Atlas Roofing – Scotchgard™ Protector Shingles
Atlas is a leader in algae-resistant technology thanks to its partnership with 3M. Their Scotchgard™ Protector uses 3M copper granules uniformly distributed across the shingle surface for maximum protection. Products include:
- Pinnacle® Pristine
- StormMaster® Shake
- StormMaster® Slate
Why It Stands Out: Atlas offers a lifetime warranty against algae streaking on many of its shingles when installed by a certified contractor.
2. GAF – StainGuard Plus™ Technology
GAF’s StainGuard Plus™ system uses time-release algae-fighting capsules to provide long-lasting protection. Top products include:
- Timberline® HDZ
- Timberline® UHDZ™
Why It Stands Out: GAF combines aesthetic appeal with high-performance algae protection and offers a 25-year limited warranty on algae resistance.
3. CertainTeed – StreakFighter® Technology
CertainTeed shingles contain copper-infused granules that offer excellent protection against algae staining. Notable products include:
- Landmark® Series
- Presidential Shake®
Why It Stands Out: CertainTeed’s reputation for durability and color options is complemented by a strong limited warranty on algae protection.
4. Owens Corning – StreakGuard™ Algae Resistance
Owens Corning’s shingles include copper-lined granules in their products to prevent streaking caused by algae. Noteworthy options include:
- Duration® Series
- Oakridge® Shingles
Why It Stands Out: The Duration® Series is particularly known for its balance between aesthetics, protection, and value.
Tips for Choosing the Right Algae-Resistant Shingle
When selecting shingles, consider the following:
- Local Climate: If you live in a humid or shaded area, algae resistance should be a top priority.
- Warranty: Look for shingles with at least a 10-year warranty against algae streaking.
- Color Selection: Lighter colors may show less staining, but algae-resistant shingles will help regardless of color.
- Contractor Certification: Choose a contractor certified by the manufacturer to ensure proper installation and warranty coverage.
Are Algae-Resistant Shingles Worth It?
Absolutely. Investing in algae-resistant shingles is a smart choice for homeowners who want to maintain their roof’s appearance and longevity—especially in areas prone to moisture and shade.
With top-tier products from Atlas, GAF, CertainTeed, and Owens Corning, you’ll find reliable, long-term protection that keeps your roof looking as good as it performs.
Learn more with “Atlas Stormmaster Shake vs. Owens Corning Duration Storm” or “What to Know About Atlas Pinnacle Shingles.”
Are you looking to upgrade your roof in southeastern Wisconsin? Rescue My Roof is an Atlas-certified roofing contractor. Contact us today to get a free estimate.
