International Leak Detection (ILD)

When ILD tests, no leak goes undetected!
Now available in New Zealand, the EFVM® leak detection system makes flood testing waterproofing membranes a thing of the past. Initially introduced to the United States market in 2001, the EFVM® System is now used extensively around the world. Waterproofing membrane defects can be caused during or after installation, i.e. mechanical damage caused by others, workmanship defects, material defects, design faults, weather related defects or membrane deterioration. EFVM® now provides an efficient and highly accurate leak detection solution.

What is EFVM®
EFVM® is a low voltage test method that creates an electrical potential difference between a non-conductive membrane surface and a conductive substrate, which is earthed or grounded.
By applying water on the membrane surface and using the water as a conductive medium, an electric field is created and a breach in the membrane creates a vector (ground fault connection).
The EFVM® technician reads the electric flow travelling across the membrane mapping the breaches with pin point accuracy.

Advantages of the EFVM® testing system

• Exact pinpointing of membrane breaches
• Non-destructive to the membrane
• Can be performed on sloped structural decks
• Membrane defects can be repaired and retested without delay to the construction schedule
• Limited use of water required for the EFVM® test
• Eliminates unnecessary removal of the overburden to locate a membrane breach
• Membrane performance can be monitored during its lifespan through the overburden

For further information please go to www.ild.co.nz