Low Voltage Electronic Leak Testing

Set-Up

• A wire loop, to act as a conductor, is placed directly on the membrane/protection course. This wire loop is placed around the perimeter of the area to be tested and used to isolate any conductive penetrations.

• One of the two leads from a power supply is connected to this wire loop conductor. The other lead is connected to the structural deck.

• As a result, an electrical potential difference is created between the membrane surface, which is wet, and the structural deck, which is “earthed” or grounded – essentially producing two opposing electric plates.

Testing

• A 16-probe receiver is placed on the wetted surface of the roofing/waterproofing membrane in an approximately 3’ x 3’ pattern.

• If there are any breaches in the roofing/waterproofing membrane (electrical insulator), the specialized testing equipment will read the small electric current as it flows across the membrane surface and down through the breach. This will complete the circuit between the two electrically charged plates/fields.

• Once the breach is located, it is marked on the membrane, photographed, and cataloged for reporting purposes.
   

Reporting

• We generate and submit a detailed report of our findings, that includes general project information, noted site conditions (with photographs), breach photographs and measured locations. A digital drawing is submitted with the report that highlights the area(s) tested, with all breach locations plotted.