Bad News for Algae is Great News for Homeowners

GAF’s new patent-pending algae fighting breakthrough fights ugly!


Many homeowners get a special feeling of pride when they see the rich textures and precise colors of a beautifully-installed new roof. It ties all of their other design choices together, symbolizes a long-term investment in protecting the things they value and completes their home.

But all across the country, that wonderful house-proud feeling is under siege by a tiny pest called Gloeocapsa magma… aka Cyanobacteria, or blue-green algae. This microscopic bacteria leaves dark black stains wherever it grows, especially on surfaces such as asphalt roofing shingles, making the homes they protect look old before their time.

Blue-green algae has spread throughout more than 80% of the U.S, including All American Roofing’s trade area throughout the state of Delaware, across Southeastern Pennsylvania, Maryland’s Eastern shore and the Delmarva Peninsula. To fight the ugly stains left by blue-green algae, our manufacturer-partner GAF has introduced an exclusive patent-pending algae-fighting breakthrough called StainGuard™ Plus, which uses specially-engineered capsules that are infused throughout with thousands of copper microsites. This innovative system releases copper over time, for long-lasting algae-fighting power.

Copper: The Not-So-Secret Weapon

Humankind started taking advantage of the antibacterial properties of copper long before we actually discovered bacteria itself. Ancient Egyptians used it to sterilize chest wounds and drinking water. In the 19th century, copper workers were discovered to be immune to cholera. Currently, many hospitals are exploring the potential of using copper as an antibacterial surface to replace stainless steel.

And for decades, roofing manufacturers have used copper, embedded in specially layered granules, as one way to combat algae growth. This technology, while quite effective, has its limits. Specifically, over time, it becomes harder for moisture to reach and release the single layer of copper embedded deep in the granules. As less stain-fighting copper gets released, the roof becomes more vulnerable to blue-green algae.

Unlike older single layer technology, GAF shingles with StainGuard Plus™ technology use specially-engineered copper infused capsules, ready to be activated in the battle against blue-green algae stains. The copper particles spread the algae-fighting power throughout the capsule, and over time the capsules slowly and steadily release just the right amount of copper to help keep the roof stain-free. That’s why we call it time-release technology.

All American Roofing: Your Trusted GAF Master Elite Certified Roofing Contractor

As a GAF Master Elite Certified Roofing Contractor we specify, sell and professionally install the full line of GAF shingles including StainGuard Plus patent pending blue-green algae fighting shingles.  GAF Timberline Ultra HD® shingles bearing the StainGuard Plus logo, and comes with a 25-year ltd. warranty against algae discoloration.¹ Find out more about StainGuard Plus technology, call us today.  Or, CLICK HERE to contact us for a FREE Estimate today.