MEET YOUR NEW WEAPON

IN THE WAR AGAINST UGLY ROOF STAINS.

Introducing StainGuard Plus™ Shingles
with exclusive GAF Time-Release technology.
Only from GAF.

There's no such thing as pretty roof algae.

Gloeocapsa magma, also known as blue-green algae, has spread throughout more than 80% of the U.S., leaving dark black stains wherever it grows, and making millions of perfectly good roofs — and the homes they protect — look old before their time.

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Gloeocapsa magma is blue-green in color, but surrounds itself with a dark brownish-black shell to protect against the sun’s rays. The dark shell causes the telltale streaking on the roof.

That's why we're proud to introduce StainGuard Plus™ Time-Release technology. It's algae resistance so powerful, it comes with a 25-year ltd. warranty against blue-green algae discoloration.*

An exclusive patent-pending algae-fighting breakthrough

 

Many traditional algae-resistant shingles use a granule technology developed more than a quarter century ago. The granules contain a layer of algae-fighting copper that is released onto the roof when it’s wet. But as the roof ages, those older granules release less and less copper, reducing the shingle’s algae resistance.

 

StainGuard Plus™ Time-Release technology from GAF releases algae-fighting copper more efficiently, over time, for long-lasting algae-fighting power.

 

Unlike the older layered technology, StainGuard Plus™ technology uses specially engineered capsules* that are infused throughout with thousands of copper microsites so copper remains within reach, ready to be activated in the battle against blue-green algae stains.

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*StainGuard Plus™ Time-Release technology and 25-year ltd. warranty against blue-green algae discoloration available only on Timberline Ultra HD® shingles sold in packages bearing the StainGuard Plus™ logo. Does not apply to Timberline Ultra HD® Reflector Series™ Shingles. See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.