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17
3
Heating Cable Installation
Raychem-IM-H58067-IceStopRoofGutterDeIcingCOM-EN 18/01
gutter. This will ensure that you have a continuous
path where the melted water can flow. Attach the
heating cables together with UV-resistant cable
ties.
• Table 4 was used in the design process of your
project to determine the amount of heating cable
required for a standard sloped roof.
TABlE 4: ICESTOP HEATING CABlE lENGTH FOR SlOPED
ROOF – STANDARD
Eave
overhang
distance
Tracing
width
Tracing
height
Feet of
heating
cable per
foot of roof
edge
Meters of
heating
cable per
meter of
roof edge
0
2' (60 cm) 12" (30 cm)
2.5 ft
2.5 m
12" (30 cm) 2' (60 cm) 24" (60 cm)
3.1 ft
3.1 m
24" (60 cm) 2' (60 cm) 36" (90 cm)
4.2 ft
4.2 m
36" (90 cm) 2' (60 cm) 48" (120 cm)
5.2 ft
5.2 m
Important: Attachment methods are not shown
in Figure 5. For attachment methods, proceed to
“Attachment Methods,” page 29.
other
considerations
• Use a snow fence or snow guards (not shown) to
prevent snow from sliding. Extend heating cable
above the snow fence at least 6 inches (15 cm).
• If there are no gutters, refer to "Heated Drip
Edges" on page 37, for information on how to
install heating cable for this application.
• It is not always necessary to run heating cables on
the roof. If you do not experience ice dams on the
roof, installing heating cables only in the gutters
and downspouts may be sufficient.
Sloped Roof – Standing Seam
For sloped standing-seam metal roofs, ice dams
may form at the roof edge. To maintain a continu-
ous path for melt water to run off, route the heat-
ing cable along the seams as shown in Figure 6