Plumbers detect slab leaks using electronic leak detectors that amplify leak sounds and pinpoint the leak’s location through the concrete without opening floors. Most checks concentrate on pressurized water lines, because tiny pinholes under the slab create a distinct acoustic signal technicians can trace. After diagnosing the issue, non-invasive locating helps target repair options with minimal disruption, and our team applies this approach across the Armstrong area.
Technicians typically:
- Confirm a hidden leak with a water meter or pressure test.
- Map buried supply routes using electronic line locating.
- Use sensitive acoustic listening equipment on the slab to narrow to an exact spot.
- If a drain is suspected, verify with a sewer camera before proposing repair.
For urgent water loss or visible pooling, this moves from “find and plan” to “stop and repair” quickly; brief 24/7 response is available. Turn off the main water valve if water is rising or the meter spins while fixtures are off.
Updated: 2026-05-19
Need help in Armstrong, IL? Call 217-559-9454 or book online. “Not only did they fix the leak and unblock the sink, but they also provided valuable advice on preventive measures to avoid similar issues in the future.” — Tooba N.