When the leak source is not obvious and leakage is an ongoing problem, our skill and equipment capability will usually win the day.
Currently, the majority of low-slope (flat) roof substrates are constructed with electrically conductive materials including steel or concrete decking and a few have a foil-faced insulation layer directly below the surface membrane. Our leak detectors use the conductive properties of these sub-surface materials to locate faults by passing current through the upper membrane defects to the conductive layer beneath.
Electronic Leak Detection for Wet Roof Surfaces*:
Electronic Leak Detection for Dry Roof Surfaces*:
In the US, the conductive substrate will usually be the metal or concrete roof deck with the “roof structure” or insulation directly above and between the deck and the non-conductive membrane. Water intrusion at the breach will usually provide a conductive path from the surface to the deck.
* The original illustrations with Armco annotations and Armco abbreviated text for the above system descriptions are courtesy of the Buckleys “Roofing-Application-Guideline.PDF”
— R.W. – Senior Regional Field Operations Manager – National Roofing Products Manufacturer and Contractor – Read More Client Comments