Radiant Heat with Invizimelt Permanently protect your investment from the nasty side of winter. Eliminate ice dams, torn gutters, damaged shingles, and water damage with a long term solution and without sacrificing the beauty of your building. You can see the results but not the product because it remains protected under the shingle. This product is used under metal roofing materials, membranes, and can also be retrofit over or under existing shingles! For non conductive roofing see our ZMesh product! Heatizon ZMesh and Tuff Cable are the ONLY products listed to melt snow and ice for installations under roofing materials Features: 25 Year Warranty 22 watts per sqft. 100% efficient Snow Sensor and/or Manually Controlled New Roofs and Remodels Retrofit Applications NEW! Promotes Safe and Effective Results Customized Systems Layout and Design Invizimelt Applications : Keep the water flowing to the ground with Heatizon GutterMelt. GutterMelt comes in several outputs to meet residential and industrial applications. Two runs of cable are recommended for common applications in gutters and downspouts.