Z-STOP Zinc Roofing Strip - 50' roll

Z-STOP® helps prevent unsightly roof stains and will inhibit the formation of black algae, fungus and moss from forming on composition, flat tile and shake roofs. Rain flows over Z-STOP® Zinc Strip, naturally releasing harmless moss killing zinc elements down the roof slope. Easy to install, great for both the do-it-yourselfer and the professional roofer.