HotSeam attaches to existing standing-seam metal roofs to create melt pathways on metal roof decks. This NEW patent-pending system is used in conjunction with the HotEdge rail to prevent ice melt from refreezing and forming icicles and ice dams on the roof edge. HotSeam is designed to firmly press heat cable against the existing metal roof panel along the seam, conducting thermal energy directly to the exposed roof panel to create a melt path down to the roof’s edge. When installed, a retention device clamps to the raised seam, providing a padded loop to securely hold the 12-watt commercial-grade, self-regulating heat cable in place.