![House with GAF algae resistant roof shingles](/-/media/images/mastheads/masthead/masthead-image/gaf/resources/hdr-stainguard-plus-1.jpg?width=1440)
Advanced Algae Protection
25 & 30-year limited warranties against blue-green algae discoloration available on qualifying GAF products¹
GAF Advanced Algae Protection Limited Warranties - StainGuard Plus™ and StainGuard Plus PRO™
Protect your customers' new roofs from eave to ridge with algae resistant shingles from GAF. Our GAF shingles, hip and ridge caps, and starter strips come with the 25-Year StainGuard Plus™ Algae Protection Limited Warranty. Or offer your customers the NEW 30-Year StainGuard Plus PRO™ Algae Protection Limited Warranty with new Timberline® UHDZ™ shingles with 10% MORE Time-Release Algae-Fighting technology.![Algae fighting power educational pamphlet](/-/media/images/content/cta-row-with-image/row-image/gaf/preview_algae-fighter-power.png?as=0&width=764&hash=770FBC50FD57418DB7D0CACF9BC39C6B)
Educational sample available for professionals
1 25 year StainGuard Plus™ Limited Warranty against blue green algae discoloration is available only on products sold in packages bearing the StainGuard Plus™ logo. 30 year StainGuard Plus PRO™ Limited Warranty against blue-green algae discoloration is available only on products sold in packages bearing the StainGuard Plus PRO™ logo. See GAF Shingle and Accessory Limited Warranty for complete coverage and restrictions.
What is blue-green algae?
What causes roof algae to grow?
![Close-up of algae fighting time-release technology on GAF roofing shingles](/-/media/images/content/cta-row-with-image/row-image/gaf/feature_time-release-tech-2.jpg?as=0&width=764&hash=6FA250CD4C299F0A0F0698EC37A8AF73)
Get the tech no one else has with GAF Time-Release Algae-Fighting Technology
Get protection you can see on our best-selling shingles - Timberline HDZ® and Timberline® UHDZ™
![House with brown Timberline HDZ shingles](/-/media/images/content/cta-row-with-image/row-image/gaf/promo_timberline-hdz.jpg?as=0&width=764&hash=0B9DBC80F5A52DD22415519F531154AD)
Timberline HDZ® shingles
![Beige house with tan Timberline UHDZ roofing shingles](/-/media/images/content/cta-row-with-image/row-image/gaf/promo_timberline-uhdz.jpg?as=0&width=764&hash=A078A56AFAFC82819E3A5BB146A673F9)
Timberline® UHDZ™ shingles
Add algae protection from eave to ridge
See warrantiesExplore products with StainGuard Plus™
Add a finishing touch that helps defend against leaks at the hips and ridges, now with a 25-Year StainGuard Plus Algae Protection Limited Warranty*.
GAF Timberline® Lifetime Architectural Roofing Shingles - North America’s #1 Selling Shingle, now with a 25-Year StainGuard Plus Algae Protection Limited Warranty*.
A wide array of designer styles and colors, to match your home, taste, and budget, now with a 25-Year StainGuard Plus Algae Protection Limited Warranty*.
Help guard against shingle blow-offs, now with a 25-Year StainGuard Plus Algae Protection Limited Warranty*.