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3.2 Preparing the Subsurface
WinterGard Mesh should be installed on a stable subsurface. In suspended structures, the top surface may consist of finished slabs,
prestressed concrete or a suspended structure with poured concrete. WinterGard Mesh can be laid on all subsurfaces such as soil,
compacted screens, sand, or gravel.
In the case of poured concrete, ensure that the subsurface is smooth and all sharp objects are removed. Ramps on a solid subsurface do not
require additional thermal insulation.
Appropriate preparations should be made for installing the temperature and moisture sensor.
3.3 Conductor Resistance and Insulation Resistance Tests
Test WinterGard Mesh by measuring the conductor resistance and the insulation resistance.
Test the conductor resistance with an ohmmeter. The measured resistance should be within -5% to +10% of the nominal resistance values
shown in Table 1 on page 10.
Test the insulation resistance (using a megohmmeter) at three voltages: 500, 1000 and 2500Vdc. The reading should be 100 Mohms or
higher.
Record all measured values on the Installation and Inspection Record provided in Section 7.
Cold lead
Conductor
Cold lead
Conductor
Ohmmeter
Ground wire
(yellow and green)
Megohmmeter
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