Even in below freezing weather, snow on the roof will often thaw because of heat from the sun and heat loss from the house through the roof. As this melted snow reaches the roof overhang it refreezes. Here there is no heat loss so the roof surface is much colder. As this melted snow refreezes again and again on the roof overhang, an ice dam is formed. Soon water backs up under shingles, and leaks into the house. ADKS roof de-icing cable prevents water and ice damage by providing a clear path for melting water. It keeps roof edges, gutters and downspouts ice-free.
When designing a roof and gutter de-icing system, it is important to know that the Easy Heat ADKS heat trace is not intended to completely eliminate snow and ice from the roof. It is simply designed to allow for the free flow of melt water off of the roof edge, down the gutter and downspouts, and finally away from the foundation of the structure. The heat trace cable length should be selected to allow for the cable to serpentine along the roof edge, drop down into and then down the gutter, and then finally exit through the downspout. This will allow for a complete path for the melt water to flow which will eliminate the costly ice dams from forming on the roof edge.
The RS-2 Control takes the guess work out of knowing when to energize roof and gutter deicing heating cables. The unit will automatically control a single, pre-terminated, heating cable up to 1200 watts. The RS-2 requires two conditions to be present before it energizes roof deicing cable: cold temperatures (On at 38F and Off at 48F) and the presence of runoff water from the roof in contact with its sensor wire. If only one of the conditions exists, the control will not energize the cable. This creates an efficient and cost effective ice dam solution.