Slab Leak Detection
California Contractor License #399170
- ●Serving homes since 1976
- ●Same-day service
- ●Licensed and insured
- ●Quality workmanship
Ready when you need us

Slab Leak Detection services
Slab leak detection investigates supply piping or other plumbing routed beneath a concrete slab when symptoms suggest water may be escaping below the floor. The goal is to narrow the involved line and location before choosing repair access or rerouting.
Water-line leak detection
If a hot or cold water line beneath the slab is suspected, we compare pressure, meter activity, moisture, sound, and temperature changes to narrow down the affected area.
Supply-line isolation and testing
When the source is not clear, we test and isolate the relevant plumbing sections so the concern can be traced before repair work begins.
Targeted slab leak location
Once the affected line is narrowed down, we use the available evidence and appropriate testing to identify the likely leak area while limiting unnecessary disruption.
Repair-route planning
After the leak area is identified, we explain whether a direct repair, reroute, or additional investigation is the appropriate next step.
Our same day service promise
Our fully stocked trucks help us complete eligible, approved work during the same visit. Specialty parts, permits, or added work may require a follow-up.
100% Satisfaction Guarantee
If you are not satisfied with our completed work, we will return and redo work within the approved scope at no additional charge.
Signs you may need slab leak detection
A floor area feels warm or damp
A hot-water line may be involved, but radiant heat, sunlight, drainage, or another moisture source can create similar observations. Comparative testing is needed.
Water use rises without a visible leak
Meter behavior can support leak investigation after fixtures, irrigation, and automatic equipment are accounted for.
Cracking, staining, or musty conditions appear near the floor
These conditions can have plumbing and non-plumbing causes. Detection focuses on whether an active pressurized line is involved before destructive access is proposed.
Detection versus slab-leak repair
Detection
Narrows the involved plumbing and likely location.
Targeted repair
May fit an isolated accessible failure when the surrounding pipe remains serviceable.
Reroute or broader replacement
May be considered when access is impractical or the piping shows repeated or widespread problems.
Related services: Leak Detection Services · Pipe Repair & Replacement
What happens during slab-leak diagnosis?
Separate hot, cold, drain, and non-plumbing sources
The symptom pattern and system behavior help identify which route should be tested.
Narrow the line and likely area
Pressure, acoustic, temperature, or other suitable methods may be used depending on access and conditions.
Compare repair approaches
A direct opening, reroute, or larger piping plan depends on the leak location, pipe history, and building access.
What happens during slab leak detection?
Our plumber uses these steps for slab-leak detection:
- 1. Review the floor, water-use, pressure, and sound symptoms.
- 2. Rule out accessible fixtures, equipment, and exposed plumbing first.
- 3. Test the suspected concealed piping with methods suited to the site.
- 4. Explain the likely location and repair-access options.
- 5. Provide a separate repair scope and price before opening finished surfaces.
Why choose Mike Diamond for slab leak detection?
We evaluate the service need, explain the recommended scope, and provide pricing before authorized work begins.
Slab Leak Detection questions
What does slab leak detection include?
Slab leak detection investigates supply piping or other plumbing routed beneath a concrete slab when symptoms suggest water may be escaping below the floor. The goal is to narrow the involved line and location before choosing repair access or rerouting.
When should I request slab leak detection?
A hot-water line may be involved, but radiant heat, sunlight, drainage, or another moisture source can create similar observations. Comparative testing is needed.
What affects the cost of slab leak detection?
The price depends on the piping system tested, building access, locating methods, leak area, repair route, and any concrete or finish restoration. We explain the recommended scope and price before authorized work begins.
How do you decide between this service and another option?
Detection: Narrows the involved plumbing and likely location. Targeted repair: May fit an isolated accessible failure when the surrounding pipe remains serviceable. Reroute or broader replacement: May be considered when access is impractical or the piping shows repeated or widespread problems.
What information should I provide when scheduling?
Describe what you notice, when it started, which fixtures or equipment are affected, whether the problem is constant or intermittent, and any recent repair, maintenance, or installation work.


