
StainGuard Plus™ Algae Protection Limited Warranty
25-year limited warranty against blue-green algae discoloration*
Contractors, see how GAF Time-Release Algae-Fighting Technology helps protect a roof.
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.

GAF Time-Release Algae-Fighting Technology

Protection homeowners want
*Based on 2021 survey commissioned by GAF of 500 homeowners in areas with moderate to high amounts of blue-green algae.
Add algae protection from eave to ridge
Customers can now get the benefits of GAF Time-Release Algae-Fighting Technology and the StainGuard Plus™ Algae Protection Limited Warranty on qualifying shingles, ridge caps, and even visible starter strips.*
Products with the 25-year StainGuard Plus™ Algae Protection Limited Warranty*:

Timberline HDZ®
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Timberline® CS
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Timberline® AS II
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Timberline® UHD
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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®
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