Electronic Leak Detection
Pinpoint membrane breaches with precision using EFVM and low-voltage testing technology.
How Electronic Detection Works
Electronic leak detection uses the principle that water conducts electricity while intact membranes do not. By applying a low-voltage current across a wetted membrane surface, we can detect exactly where breaches allow current to pass through.
- EFVM Testing: Electric Field Vector Mapping for large area surveys
- Low Voltage Testing: Precise breach identification in controlled areas
- High Voltage Testing: For dry membrane testing without water
- Verification Testing: Confirm repairs are watertight
Applications
- Flat roof membrane testing
- Plaza deck waterproofing
- Parking structure membranes
- Green roof systems
- Containment liners
- Tunnel waterproofing
Testing Methods
EFVM (Low Voltage Wet)
Best for large area surveys. A wet membrane surface allows current to flow at breach points, which we map using specialized equipment.
High Voltage Dry
For testing when water cannot be applied. Uses a spark to identify thin spots and pinholes in dry membrane surfaces.
Embedded Wire Systems
Permanent monitoring systems with conductive wires embedded in the assembly for ongoing leak detection.
Frequently Asked Questions
What is EFVM leak detection?
Electric Field Vector Mapping (EFVM) is a technique that uses low-voltage electrical current to find breaches in waterproofing membranes. A current is applied to the membrane, and any breach allows current to flow to the substrate, which we can detect and locate precisely.
What surfaces can be tested electronically?
Electronic testing works on single-ply membranes (TPO, PVC, EPDM), modified bitumen, built-up roofing, waterproofing membranes, plaza decks, parking structures, and containment liners. The membrane must be non-conductive for this method.
Does the roof need to be wet for testing?
Yes, the membrane surface needs to be wet for the test. This is typically done by flooding small sections or using a wet brush technique. The water creates the conductive path needed to identify breaches.
How accurate is electronic leak detection?
Electronic leak detection is extremely accurate, typically locating breaches within 1-2 inches of the actual defect. This precision allows for targeted repairs rather than large-scale membrane replacement.
Schedule Electronic Testing
Find membrane breaches with pinpoint accuracy. Perfect for quality assurance on new installations or troubleshooting existing leaks.