Uncovering roof leaks with electronic leak detection (ELD)

Detail work being electronically tested.

Introduction

While numerous high-quality flat roofing systems are available, their reputation can be marred by poor installation and follow-on trades. This is where the Electronic Integrity Test (ELD) comes into play. It's a crucial tool, whether for new or existing roofs, that we rely on to identify water ingress or its potential, thereby ensuring the longevity and performance of the roofing system.

How the Electronic Integrity Test Works

ELD, also known as a spark tester or pinhole tester, is a method used to detect discontinuities (such as cuts, pinholes, or poor installation) in roofing systems applied to metals, concrete, and other conductive substrates. The test involves applying a high-voltage electrical current to the surface of the membrane. If there is a discontinuity in the membrane, the electrical current will arc through the defect, producing a spark that can be detected and pinpointed.

Advantages of the Electronic Integrity Test

Its noninvasive nature ensures minimal disruption to roof integrity during inspections. It is far more reliable than visual inspections. Additionally, its high precision reduces the likelihood of overlooking leaks, enabling proactive maintenance and swift repairs. Moreover, this method can efficiently cover large areas, making it time—and cost-effective.

Disadvantages of the Electronic Integrity Test

ELD can only be used on nonconductive membranes and highly conductive substrates. It must be carried out in person, meaning adequate access and working at height are essential. However, we have all the necessary skills and qualifications to overcome this challenge.

Conducting a Electronic Integrity Test

After ensuring the availability of safe access and work systems, the roof should be cleared of debris and dried. Our equipment is set up, and an appropriate earth point is established to create an electrical circuit. An electronically charged copper brush is used to scan the surface of the roofing membrane, and any defects in the system are marked for reporting. Smaller details and upstands are tested with a small brush to ensure their integrity. A report is collated with findings and images, ready for your chosen contractor to repair.

Conclusion

The Electronic Integrity Test is a reliable method of finding pinholes, cuts, and poor membrane installation. It is highly precise and superior to visual inspections, making it highly reliable.

Do you need a reliable method to solve your roofing problem? Contact us today to learn more about our Electronic Integrity Test and how it can help you find your roof leak.