GAF StainGuard Plus™ Technology: How It Prevents Roof Algae – Blackstone Exteriors

Also called cyanobacteria or gloeocapsa magma, blue-green algae are microscopic bacteria that often grow on asphalt shingles. They usually look like black stains, which can make your roof seem older and worn-out.

Since algae is a common problem with asphalt roofing, GAF developed a technology that effectively deters algae: GAF StainGuard Plus™ roofing shingles.

GAF StainGuard Plus™ and Algae Prevention

GAF StainGuard Plus shingles are designed to hold granules made with slow-release, algae-killing copper. These copper particles are placed in specially engineered time-release capsules, which can discharge up to 10 times more than the old technology.

This is made possible by the GAF StainGuard Plus technology, which allows for a gradual and steady release of just the right amount of copper over a certain period. A roofing contractor will likely recommend these shingles to you. This is because, unlike the old technology, they do not release a large amount of copper at the beginning, which usually results in fewer copper particles after some years. With a consistent and efficient system of releasing copper, GAF StainGuard Plus shingles have longer-lasting protection against roof algae.

Why Copper Works

Copper is commonly used for fighting algae because it has antibacterial properties, which have been proven to be effective in combating algae growth. Thanks to GAF’s StainGuard Plus technology, homeowners can benefit from the algae-killing properties of copper for a longer time. This means that you can have peace of mind that your roof will remain algae-free for several years.

If you’re looking for a local roofing contractor, Blackstone Exteriors provides the best service in the region. Our staff members are trained and experienced so you can expect professional and reliable assistance from us. Call us at (515) 720-2158, or fill out our contact form to request a consultation.