Yes. GutterMelt SR cable is safe for use with plastic downspouts because of its self-regulating heating characteristics — the cable cannot overheat, since its heat output decreases as the surrounding temperature rises. This makes it safe on materials that would be damaged by a constant-output cable running too hot in warmer conditions.
Yes. GutterMelt is ETL listed for the United States and Canada, certified to UL and CSA standards.
GutterMelt cable sold per foot carries a 10-year manufacturer’s warranty. Pre-configured cordset kits carry a 5-year warranty. The difference comes from the kit’s added components — the factory termination and LED plug — which have a shorter rated service life than the heating cable itself. The cable in both versions is identical; the warranty difference reflects the additional hardware required to make the kit plug-and-play.
GutterMelt sold per foot is bulk cable cut to the length specified for the project, intended for custom installation by a contractor or electrician. GutterMelt kits are pre-configured, ready-to-install cordsets that come factory-terminated with a 6-foot power cord and LED plug, along with downspout hangers and roof clips, in standard lengths from 10 to 130 linear feet. The kit format trades custom sizing for plug-and-play simplicity — ideal for straightforward residential installations.
GutterMelt is Heatizon’s heat trace cable for gutters, downspouts, eaves, and drains — designed to maintain a clear water flow path and prevent ice dam formation. It’s available in Self-Regulating (SR) and is ETL listed to UL and CSA standards for the United States and Canada. GutterMelt operates at 120V, 208V, 240V, or 277V and can be ordered by the foot for custom installations or as a pre-configured, ready-to-install cordset kit.
For non-conductive roofing materials — asphalt shingles, wood shake, tile, and most membranes — ZMesh is the recommended alternative. ZMesh lays directly under the shingles without any panel system, is approximately 1/16 inch thick, can be nailed and stapled through, and carries the same UL 1588 listing and 25-year warranty as the Tuff Cable in Invizimelt. Invizimelt with Tuff Cable is the correct choice for metal roofing, valley metal, flashing, and conductive surfaces where ZMesh cannot be used.
The Tuff Cable heating element within every Invizimelt system carries Heatizon’s industry-leading 25-year manufacturer warranty — 2.5 times the length of the standard 10-year warranty offered by competing heating cable products. The Invizimelt aluminum panels are a solid-state component with no wear parts and no expected service life limitation under normal installation conditions. Heatizon provides full technical support after commissioning with no time limit.
Yes. The Invizimelt system, using Tuff Cable as the heating element, is ETL listed to UL Standard 1588 and CSA standards — making it the only listed system available for under-roof snow and ice melting in the United States and Canada. This listing makes the Invizimelt system the only under-roof deicing product fully compliant with NEC Article 426 for enclosed panel heating applications. For permitted construction projects requiring a code-compliant under-roof deicing system, Invizimelt with Tuff Cable is the only listed option on the market.
Yes. The Invizimelt system — panels, Tuff Cable heating element, and control unit — contains no moving parts. The only mechanical action in the system is the automatic activator, which has no moving parts either, detecting snow and ice conditions electronically. A solid-state system with no moving parts has no wear components that require scheduled maintenance or replacement over the life of the installation.
Once Tuff Cable is snapped into the Invizimelt panel channels, aluminum tape is applied over the cable and panel surface. Aluminum’s high thermal conductivity means heat from the cable spreads rapidly and evenly across the full panel face, with no heat lost downward into the sub-roof below. The result is that essentially 100% of the electrical energy consumed by the Tuff Cable is converted to useful heat at the panel surface — making Invizimelt one of the most energy-efficient under-roof heating configurations available.