How far up the roof does Invizimelt need to extend?
The Invizimelt system is designed to heat from the drip edge up to the point where interior building heat is already warming the roof from below — the zone where snow naturally melts on its own. This design eliminates cold spots between the heated eave zone and the warm upper roof, preventing meltwater from refreezing mid-roof before it can drain. Unlike cable-on-roof systems that only heat a narrow strip at the eave, Invizimelt provides continuous coverage across the full ice dam risk zone. Heatizon’s design team specifies the exact panel coverage area based on roof geometry, insulation values, and local snowfall data.