Buckleys Wet Roof Pro Application Manual page 9

Method of testing
The electrode should be passed slowly over the membrane surface at a maximum rate of 100mm per
second, paying attention to edges, holes and irregularities in the coating. The test voltage may need to be
reduced to test the edges as the coating may be thinner.
When a fault is identified by the detector, the electrode should be moved sideways to identify the precise
location of the problem. All faults should be ringed with a suitable marker so that repairs can be carried out
later. The identification of the fault should be far enough away from the defect to allow the repairs to be made
without covering the markings, as the substances contained in some markers can affect the adhesion of the
repair material.
Testing should be continued across the complete surface and all faults marked. Damaged areas should be
re-tested after repairs have been carried out.
Testing Flat Roof Membranes
A suitable point on the structure should be
identified as an earth connection for the earth
lead of the Dry Roof Pro'.
Following the instructions in the operating
manual of the Dry Roof Pro', the output
voltage should be set according to the
calculation made using the formula shown
above. The earth lead and test probe
handle should be connected to the Dry
Roof Pro' whilst the unit is turned off.
The other end of the earth lead should be
attached to the earth connection point of
the structure ensuring that a good electrical
contact has been made.
With the Dry Roof Pro' still turned off,
extension rods should be connected to the
test probe handle. Using the shoe
attachment, a suitable electrode should be
attached to the opposite end of the
extension rods. Any electrode used must be
in good condition as a damaged one will
not make full contact and faults could be
missed.
The operation of the Dry Roof Pro' should
be checked by touching the electrode
onto the substrate. The audible alarm
should then be activated, but if not, the
lead connections should all be checked. It
may be necessary to adjust the sensitivity
control on the unit. Reducing the setting
will make the unit more sensitive, while
increasing the setting will make the unit less
sensitive, ie for situations when the coating
is damp.
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