Start with the problem
A damp area or unexplained water concern can raise the possibility of a leak beneath a slab, but it doesn't confirm one. Ask what testing can establish and how the location would be narrowed down. Detection, access, pipe repair, and floor restoration may be separate parts of the job.
When to ask for help
- Unexplained moisture near floor level
- Water-use changes without visible fixture leaks
- A provider suspecting concealed under-slab piping
What the plumber needs to check
A concealed supply or drain defect may be involved, but floor moisture has other possible sources. Testing should distinguish them before choosing a repair.
How should I prepare?
Share plans, prior repairs, and when the symptoms occur. Ask what the testing can establish and how any access openings or rerouting would be planned.
Before you agree to the work
Options can include a local repair or a rerouted section when appropriate. Compare access, restoration, and remaining pipe condition rather than selecting solely by the smallest opening.
Should I authorize floor opening at the first visit?
Ask what findings support the proposed location, what uncertainty remains, and whether less disruptive checks are available. Agree on the access work and restoration responsibility before it begins.
How to arrange the next step
- Describe the issue, property location, and any immediate safety concern.
- Ask the provider to confirm that they handle the job at your address.
- Check the visit charge and agree on any repair before it begins.
- Keep the findings and ask what was checked when the work was finished.
For Oregon provider checks, use our license and scope guide. This website does not perform plumbing work or guarantee a provider match.
Questions about slab leak detection & repair planning
Does a warm floor prove a hot-water leak?
No. It can be a clue, but testing is needed to establish the source.
Will detection avoid all concrete removal?
Not always. Ask about diagnostic limits and the access required for the proposed repair.
Related homeowner guide
What to do when a pipe bursts — What to do first, what to tell the plumber, and how to separate the repair from water-damage work.
General service guidance · Updated 2026-10-02 · How we prepare our content
