Zig Zag Cables for Shingle Roofs

An example of zig zag roof heat cables installed on a shingle roof.Sun and building heat combine to melt accumulated snow at the roof/snow interface. Snow is porous and allows water to flow. Ice is not porous and will trap water. Water will flow as long as the roof surface stays above freezing. When the water runs to the roof edge it freezes, starting an “ice dam” that continues to grow and trap more water, leading to leakage problems. The objective of a snowmelt system is to ensure the water is drained off and not allowed to freeze at the roof edge forming a dam.

The water that enters into your rain gutters can freeze and build up an enormous amount of weight causing water to leak into soffits and enter into the building. Most rain gutters are not built to hold excessive weight from ice and excessive ice may cause a safety and structure damage potential.

Icicles can also form which can become dangerous and damaging to the property.

The benefits to a Self-Regulating Cable:

  • Simple to Install
  • Reliable and a longer design life
  • Can be overlapped
  • Can be cut to length on site
  • Saves energy
  • Will not overheat roofing materials or ruin plastic or vinyl rain gutters

Use the Serpentine method. Be sure that the heating cable extends all the way into the gutters, meeting the run in the gutter to form a continuous path. Generally, use one run of heating cable in the gutter. If there are no gutters, use the serpentine method and our heated drip edge or hang loops off roof edge.

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Roof Clips for Shingle Roofs

RCK-1 Roof Cable ClipsThe RCK-1 Roof Cable Clip is used to attach Chromalox heating cable to most types of roof surfaces. This kit contains 5 double clips, which is enough for approximately seven linear feet of roof edge.


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