When you need slab leak detection & repair
- A warm spot on a tile or concrete floor
- Sound of running water with fixtures off
- Water meter moving with everything off
- Damp carpet or warped flooring with no plumbing above it
- Cracks in the floor or baseboards with moisture
How it works
- Isolate hot and cold systems to see which is leaking.
- Use acoustic ground microphones and thermal imaging to pinpoint the leak.
- Choose a repair: break the slab at the spot, reroute the line overhead, or repipe.
- Pressure-test the repaired or new line.
How it compares
| Approach | What happens | Best when |
|---|---|---|
| Direct access | Break concrete at leak, repair, patch | First leak, pipe otherwise sound |
| Reroute | Abandon line, run new pipe through walls or attic | Leak under finished flooring; repeat leaks |
| Repipe | Replace whole supply system | Multiple leaks or aging pipe throughout |
Limits and when it’s not the right fix
- Direct repair under the slab fixes one leak but leaves the rest of the under-slab pipe in place.
- A second slab leak in the same system often makes rerouting or repiping more sensible.
- Flooring removal and replacement is often a separate expense.
What affects the cost
We don’t publish national price figures because real quotes vary too much by region, access and the condition of your system. These are the factors that move the price:
- Detection time
- Floor type above the leak
- Repair approach
- Length of reroute
- Flooring restoration
Ask for a written quote that names the method, materials and any permit or restoration work before work begins.
Slab Leak Detection & Repair: common questions
What are the signs of a slab leak?
Warm spots on floors, the sound of water with fixtures off, a moving water meter, damp flooring, and unexplained high bills are the most common signs.
Is a slab leak an emergency?
A slab leak should be dealt with promptly. Continuous water under a foundation can damage flooring, encourage mold and, in some soils, contribute to foundation movement.
Is it better to reroute or repair a slab leak?
For a first leak in good pipe, direct repair may be reasonable. If the pipe is aging or a second leak appears, rerouting avoids repeated concrete work.
Does homeowners insurance cover slab leaks?
Many policies cover access to the leak and resulting damage but not the pipe repair itself. Coverage differs by insurer.
