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The installation of the deicing roof
cable was very easy, albeit I had to spend a couple of hours high up on a
ladder. But besides having to readjust the position of the ladder every couple
of feet the job was a piece of cake. All that was required to install the
deicing heat cable was a pair of pliers and a putty knife.
Though our home’s roof was properly shingled, and includes ice and water shield
within the first 6 feet of the roof eaves, I’ve still had concerns when I’ve
seen several inches of ice build up along the roof eaves. Ice dams along roof
eaves are notorious for causing water damage within the home as melting snow
water backs up under the shingles and into the attic. From there it inevitably
ends up staining and damaging ceilings and interior walls. Climbing up ladders
in the dead of the winter to scrape away roof snow buildup is a hassle, time
consuming, and dangerous. So this year, I decided I’d give deicing roof heat
cables a try.
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The key to buying a dicing heat cable
is to purchase one that is long enough to do the job, but not excessively long.
Start by measuring the length of roof line you want to install dicing roof heat
cable. Also measure the depth of the soffits under the roof eaves. In addition,
if you have gutters along the roof line where you want to install the heat
cable, you’ll need to account for their linear feet when choosing your heat
cable length. Then visit your local home improvement center and read the
instructions on the back of the roof heat cable box to determine what length is
necessary for your particular roof line.
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When installing deicing roof heat
cable you’ll want to mount it on the roof in a continuous triangular pattern.
The deicing cable triangle peaks should extend upwards from the edge of the roof
eaves to a point where they extend over the attic area. More specifically, the
triangle peaks should extend just beyond the vertical plane of the exterior
walls. Based on the width of the soffit, typically the heat cable triangle peaks
should extend up to the bottom of the 3rd or 4th course of shingles.
Keep in mind that the end of the roofing heat cable will need to plug into a
properly rated electrical outlet. The electrical outlet also needs to be on a
ground fault circuit interrupter (GFCI) circuit. We were fortunate to have a
20amp rated GFCI electrical outlet on the side of our home that the deicing roof
heat cable could plug into.
| As I mentioned earlier, the deicing roof heat cable installation was a breeze,
other than the fact of having to continuously adjust the ladder. Once the ladder
was put into position at a point that was farthest away from the electrical
outlet, I simply installed the clips onto the bottom tabs of the shingles. At
the roof eave, I installed a mounting clip every 15 inches to the first course
of shingles. I also installed mounting clips at the bottom of the 3rd course of
shingles, centered between the clips at the roof eaves. The putty knife helped
to loosen up the base of the shingles to slide the mounting clips into place.
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Photo By Mark Donovan |
After installing mounting clips along 3 to 4 feet of the roof line, I snapped
the deicing roof heat cable into the mounting brackets. I also used a pair of
pliers to ensure that they were tightly clamped into place. I then continued
this process along the entire roof line. Since I had no gutters to contend with,
I then ran the remaining portion of the deicing roof heat cable down an exterior
wall. From there I attached a 14 gauge extension cord to it. The other end of
the extension cord was positioned near the GFCI electrical outlet. And with
that, the installation of the roof heating cable was complete.
It’s mid December now as I write this article, and I’m still waiting for the
first snow storm to test out my new deicing roof heat cable. However, I’m
confident it will do an excellent job of melting the roof ice, and preventing
the need for me to have to go up on a ladder and scrape the roof. Later on this
winter I’ll report back my results with the deicing heat cable.
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