They form when snow melts in warmer areas of the roof sending water running down toward the edge.
Roof ice melting cable.
It help prevent ice from forming under the edge of your shingles.
Long for large roofs.
In this video master electrician for ask this old house scott caron helps a homeowner install heat cables on his roof to stop ice dams.
The thermwell 100 ft.
Clip in the cable along the same zigzag pattern as the shingle clips.
Heat cables for ice dams ice dams can pose many problems.
Use to help prevent roof damage and leaking.
Product overview the thermwell 200 ft.
Roof de icing cable kit can be used to keep gutters and downspouts flowing and help prevent ice from forming under the edge of your shingles.
The kit comes with all the clips and spacers you need to install the entire 240 foot cable in a zigzag pattern across the edge of your roof in the gutters and down your downspout.
You need to ensure that you install this cable before heavy snowstorms since it won t produce enough heat to melt fully formed ice dams.
Roof de icing cable kit can be used to keep gutters and downspouts flowing.
This de icing kit comes with shingle clips and is 100 ft.
Long for large roofs.
Secure shingle clips to roof shingles using a flathead screwdriver making sure to align them in a zigzag pattern.
A typical 120 foot long roof edge with 6 12 overhangs and no gutters deicing will need about 291 feet of cable.
When it reaches the eaves where the temperature of the roof is colder the water refreezes.
Use to help prevent ice from forming under the edge of your shingles.