Paul Macrina Electrical Contracting Inc. is a full-service electrician in Medfield that can help you with reliable roof de-icing systems. Roof de-icing cables are an incredibly effective method for preventing ice dams and protecting your roof from winter damage.
Basically, roof de-icing cables rely on the same principles that defrost your car’s rear windows. Whenever electricity passes through a conductor with resistance, it heats up. That’s why electronics heat up as they operate.
In the case of your rear window, a small amount of electricity passes through a grid of metal-infused resin to defrost the window and clear your view. Roof de-icing cables pass more electricity through larger wires to do the same thing, but on a larger scale.
The de-icing cables come in a variety of shapes and sizes, many of them pressed flat. Flatforms are known as heat tape. They all work the same, though, with the resistance from the wire generating heat to melt ice dams as they form.
Ice dams only grow when they have a chance to thaw and refreeze. The roof de-icing systems prevent that, which means that the problem can not get worse. You only need cables for the very edge of your roof, as that is where the ice dams form. You do not actually have to melt all of the snow from your roof because the cleared path lets natural melted water escape without damaging your roof.
These roof de-icing systems can also be applied mid-season to melt away already-formed ice dams. While this is better than nothing, the best way to ensure that your roof is not damaged is to have your de-icing cables in place by the start of the season. An ounce of prevention is worth a pound of cure.
You might also need de-icing cables installed on other areas of your roof, depending on the shape of its slope and any features like chimneys and skylights. These areas can contribute to the build-up of ice, so it is well worth consulting a professional electrician in Medfield to make sure you’re getting the roof de-icing systems you need.