Blue-green algae is a common roofing problem that annoys homeowners. Carried by the wind, these microscopic spores multiply upon landing on damp areas of the roof, forming a visible green- or black-colored mass. Though they don’t pose any structural threat to residential roofing systems, these can make once-beautiful shingles unsightly.
Fortunately, this menace can now be prevented thanks to GAF’s StainGuard® Plus™ technology, which is available in most of the manufacturer’s shingle products. Here’s what you need to know about this innovation.
A Breakthrough in Copper Delivery
Decades ago, blue-green algae were removed from roof surfaces using copper capsules embedded in flashings and shingles. When it rains, the copper is released when it comes into contact with moisture. However, this is considered inadequate because the capsules eventually run out, allowing green and black stains to appear on the roofs again.
This is no longer the case with GAF’s top-of-the-line shingle products. Paired with the manufacturer’s Time-Release technology, thousands of copper microsites are infused in each shingle, which disperses up to 10 times as much copper as traditional shingles. The release of copper is efficient enough to ensure a stain-free roof surface for years to come. With GAF’s revolutionary breakthrough, roof maintenance has never been this time- and cost-efficient.
Long-Lasting Protection Against Blue-Green Algae
GAF shingles that bear the StainGuard Plus logo include the Timberline® Ultra HD® and American Harvest® Shingles. These come with a 25-year limited warranty against blue-green algae discoloration. By installing these shingles, you can guarantee your new roof won’t be having ugly green or black stains for a long time.
For your roof repair and replacement needs, turn to Crown Roofing. We are a GAF-certified roofing contractor, which means we offer many different shingle products, including those equipped with the StainGuard Plus technology. Enjoy the pristine beauty of your new roof for as long as possible. Call (604) 370-6288, or fill out our contact form to request an estimate. We serve homeowners of Surrey and Vancouver.