HotTile is a design specifically developed to prevent ice dams and icicles from developing on concrete tile roofs. No modifications to existing roof decks are required simplifying the installation process. HotTile simple slides over existing concrete tiles and protects and compresses a single heat trace cable for direct heat transfer! HotTile2X and 3X are available when additional melt back from a roof edge is needed. The benefit in our 2X and 3X designs is that we strategically separate heat trace cables for maximum melting. For example, with the 2X (or two heat trace cables) we are able to offer a minimum of 20 inch melt back from roof edge!