ROOFING (COMPARATIVE)
SCALE 3
a. The presence of moisture in built-up roofing systems
covered with multi-ply roofing felt, PCV, modified
bitumen (torched-on) or other membranes, can cause
blistering and splitting of the roof surface, In addition
moisture can cause considerable damage to the
contents and fabric of the buildings as well as heat
loss through wet insulation. Your ME5 can be used to
confirm a new roof has been installed dry.
b. When the waterproofing membrane develops a leak,
the water can travel within the built-up-roof structure
and enter the building some distance away. Testing the
membrane surface and comparing the dry areas with
areas where moisture is present below the surface can
assist in tracing such a leak to its source.
c. As there are many different types and thickness
sizes of roofing membranes, it is not possible to give
a calibrated percentage measurement. Instead, the
comparative scale, marked 0 - 100, is used for check-
ing the difference between wet and dry.
d. If gravel surfacing is present, this should be removed
to ensure your Moisture Encounter ME5 comes into
direct contact with the surface of the membrane.
e. It is recommended that a core be cut to determine the
depth and extent of the moisture before carrying out
roof repairs. Alternatively, the area can be checked
with a Tramex Professional resistance type moisture
meter with insulated pins.
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MOISTURE ENCOUNTER 5 USER GUIDE
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