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Utility Insulation


PlastiSpan® Insulation is used in Cathedral Ceiling, Continuous Insulation, Exterior Foundation, Interior Basement Walls, Basement Floor, Under Slab, Hydronic, EIFS and handi-pac Packaging & Display.


Utility lines are usually placed below the expected penetration of frost into
the soil in order to prevent freezing of the water in the lines. It is sometimes
not possible to bury lines deep enough due to high water table, rocky
outcrops, or soil conditions. Water lines for snow making equipment inevitably
end up partially exposed to a freezing environment. Lines may also be in the
active layer of permafrost, or for other reasons it is known they will be in a
freeze zone. Under these conditions the pipe can be insulated with pipe
covering at time of installation to increase the time the pipe can store still
water before freezing.

Utility lines may freeze after installation due to underestimation of frost
penetration or due to removal of some of the protective soil covering. It is
possible to eliminate the problem next season by placing a layer of Plasti-Fab
PlastiSpan insulation above the utility line but under the ground level to raise
the frost line above the utility line. This system is not usable where the utility
line is installed in the active layer of permafrost. The principle of insulating
utility lines can also be applied to the insulation of manholes.
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SI VALUES
THICKNESS
PLASTISPAN HD
G
SANDY SOILS
G
CLAY SOILS
25 mm 400 mm 300 mm
50 mm 800 mm 600 mm
75 mm 1200 mm 900 mm
100 mm 1600 mm  
125 mm   1500 mm


IMPERIAL VALUES
THICKNESS
PLASTISPAN HD
G
SANDY SOILS
G
CLAY SOILS
1" 16" 12"
2" 32" 24"
3" 48" 36"
4" 64"  
5"   60"
"G" is the difference between the pipe location and the expected depth of the frost penetration.