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INSTALLING THE CABLE CONT PAGE 8.
INSTALLING THE CABLE CONT PAGE 9.
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6
Pattern for valleys
If a valley exists in a problem area of your roof, you must route cable up and back
down the valley a minimum of 3 ft (90 cm), as shown in
Figure 6
. Extend the cable
higher if the warm area of your roof is higher.
Pattern for dormers
To treat a problem dormer area, the cable should be arranged up and around the
dormer as shown in
Figure 7
.
Pattern for other special roof areas
Other problem roof areas not previously described may also be treated with de-icing
cable to prevent ice dam formation. Triangles – similar to those used for the roofline –
can also be used to treat these special areas.
In treating these special problem areas, the height of the triangles may be greater than
that used at the roof edge. Keep the triangle base at 15 in. (38 cm) but increase the
triangle height so that it extends at least one shingle row (5 ½ in. [14 cm]) into the warm
roof section.
Triangle heights must not exceed 20 ft (6 m). The clips provided with the kit are not
designed to attach triangles this large. For problem areas that are more than 20 ft
(6 m) from the roof edge, commercial grade de-icing cable should be installed by a
professional installer. Contact °STELPRO for assistance.
CABLE PATTERN IN A VALLEY
CABLE PATTERN AROUND A DORMER
