Algae-Fighting Shingles

GAF enhanced its Timberline HDZ shingles with the addition of proprietary time-release algae-fighting technology to offer even greater protection for the roof. The only time-release product of its kind is now standard on many of the shingles offered in GAF’s residential product line, including ridge cap and visible starter strip shingles.

The technology consists of specially-engineered capsules that release copper steadily over time. Capsules are infused with thousands of copper microsites for long-lasting algae-fighting power. The algae resistance is so powerful, GAF offers a 25-year limited warranty against blue-green algae discoloration.

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