Top
6"
6"
4 ft
Bottom
4 ft
Figure 8. Jigs made from 2- 4-in. lumber to
Figure 9. Staggered insulation
board joints.
hold the insulation during installation.
Figure 10. Insulated service tap entering the shield.
avoid any gaps that would provide a path for
line crossing through the insulation shield at ap-
heat loss.
proximately 70 m (231 ft) up the pipeline. The
Figure 10 shows a service tap entering the
sides of the shield were notched so the insulation
shield. These taps were insulated with closed-cell
would fit over the pipe, and then insulation was
pipe insulation, and the hole made in the insula-
fitted into these notches under the water pipe
tion shield was foamed with a closed-cell spray
after the sides were installed. Some spray foam
insulation. Figure 11 shows a residential sewer
was added to close up any remaining gap be-
9
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