Heatizon Systems Cord Connected GutterMelt Roof Deicing Kits bring commercial quality and performance to residential applications. With 9 watts/ft of melting power and an industry leading 5 year warranty, expect years of worry free, and maintenance free service backed by our very own technical experts in the United States. Designed to prevent ice build-up, known as ice dams, from forming on roofs and in gutters and downspouts. Protects roofs from damage and leaking water by providing drain paths to get water off the roof. Suitable for Gutters, Downspouts, Metal and Non-Metal Roofs.