Electronic leak detection methods put a voltage across a membrane and look for where current escapes through a hole to a grounded deck, either by low-voltage mapping over a wetted surface or high-voltage scanning of an exposed dry membrane. ELD locates pinpoint breaches that a flood test would only show as a leak somewhere below. It requires a conductive deck or a conductive layer under the membrane.
Skip the flood test, the deck can't take the load. We'll ELD it and patch whatever the scan finds.
Also heard as
- electronic leak detection
- vector mapping
- spark testing
Related terms
Flood test
Damming a membrane area and filling it with water for a day or more to prove it does not leak.
Holiday
A gap, pinhole or thin spot in a membrane or coating where it fails to cover the substrate.
Plaza deck
A waterproofed structural slab over occupied space, topped with pavers, soil, planters or a wearing slab.
Fluid-applied membrane
A liquid waterproofing applied by roller, squeegee or spray that cures into a continuous rubbery film with no laps.