Install Copper Cat Algae Terminator® (CCAT) Roofing Strips along the ridge of your roof for the ultimate protection. With its unique patented design, CCAT prolongs water contact maximizing the benefits of copper through the release of ions to prevent future growth of algae, mold, moss, etc. on shingles.

These double-sided copper strips are 20 times stronger than zinc, made from 99.96% pure antimicrobial-grade copper (UNS# C11000), far exceeding the 92% purity required by ASTM standards. Over time, the copper oxidizes to blend with 90% of shingle colors, creating a neat and clean look. The strips release ions when interacting with water, preventing the growth of algae, mold, and other organisms on shingles.

Suitable for new or existing roofs made of asphalt, cedar, slate, and more, these strips improve your roof’s appearance by eliminating black streaks and discoloration. Built to last for hundreds of years, they can be reused on each new roof.