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20
3
Heating Cable Installation
Raychem-IM-H58067-IceStopRoofGutterDeIcingCOM-EN 18/01
Flat Roof
Ice dams may occur on flat roofs at the edge flashing
and at drains. Flat roofs are typically pitched toward
drains and these paths often become obstructed
by snow and ice. To maintain a continuous path for
melt water to run off, route the heating cable as
shown in Figure 7 and follow the appropriate attach-
ment recommendations in “Attachment Methods‚”
page 29. Additional heating cable may be needed
for downspouts.
Junction
box
Drain
Slope
Ice can form around
drain and at roof edges
where adjacent snow
thaws during the day
and refreezes at night.
Heating cable provides a
continuous heated path to
allow melt water to run off
the roof before it refreezes.
Heating cable should be
positioned around the
perimeter and in the valleys
of a flat roof. The heating
cable must extend into the
drain orscupper to allow the
melt water to exit the roof.
Scupper
Drip loop
Figure 7: layout on a flat roof