This presentation from Shaun Katz, product line manager for DTEK Systems, breaks down the science, applications and limitations of electronic leak detection (ELD) in roofing and waterproofing systems. The session explains how ELD works as an electrical circuit — using either water, conductive media or direct contact with a conductive substrate — to identify breaches, seam voids and punctures in membrane systems. Katz walks through the four primary testing approaches, including high-voltage spark testing, low-voltage vector mapping, low-voltage scanning and vertical roller methods, highlighting where each is appropriate and where they fail.