
Advanced Algae Protection
25 & 30-year limited warranties against blue-green algae discoloration available on qualifying GAF products1

What is blue-green algae?

What causes roof algae to grow?
How does GAF Time-Release Algae-Fighting Technology work?
Specially engineered capsules are infused throughout with thousands of copper microsites. These breakthrough capsules release algae-fighting copper efficiently, over time, for long-lasting algae-fighting power.
Request your educational sample
Show homeowners how GAF Time-Release Algae-Fighting Technology works to protect the beauty of their roof investment, and allows GAF to offer a 25-year StainGuard Plus™ Algae Protection Limited Warranty.*
Learn how the 25-year StainGuard Plus™ Algae Protection Limited Warranty may help you increase sales.
Complete the StainGuard Plus™ Algae Protection Limited Warranty Playlist on the GAF Learning Portal to learn more about GAF Time-Release Algae-Fighting Technology and why algae protection is important to your customers.
Add algae protection from eave to ridge
Customers can now get the benefits of GAF Time-Release Algae-Fighting Technology and the strong algae protection limited warranties on qualifying shingles, ridge caps, and even visible starter strips.
GAF Products with the 25-year StainGuard Plus™ Algae Protection Limited Warranty2:

Grand Canyon® Shingles
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Grand Sequoia® Shingles
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Grand Sequoia® AS Shingles
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Camelot® II Shingles
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Slateline® Shingles
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Woodland® Shingles
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TimberTex®
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TimberCrest®
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Ridglass®
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Seal-A-Ridge®
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Z® Ridge
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Seal-A-Ridge® AS
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StarterMatch®
SEE PRODUCT
Now available — our only product with a 30-year StainGuard Plus™ PRO Algae Protection Limited Warranty3
Timberline® UHDZ™ shingles now have stronger algae protection coverage
Timberline® UHDZ™ shingles feature the patent-pending Dual Shadow Line, which creates the look of sunset shadows all day. To help protect that beauty, GAF has added 10% more Time-Release Algae-Fighting Technology, making Timberline® UHDZ™ the only GAF shingle that comes with a 30-year StainGuard Plus™ PRO Limited Warranty against blue-green algae discoloration. 3