Leak Detection & Slab Leaks in Mesa, AZ
Pinpointing hidden leaks behind walls and under concrete slabs
A hidden leak in a pressurized water line doesn't stop. It runs continuously, quietly destroying drywall, flooring, and cabinetry while your water meter spins. In the East Valley, where thousands of homes built between the 1970s and 2000s have copper supply lines routed directly through or beneath the concrete foundation, slab leaks are a common and destructive reality.
Finding a leak under a concrete slab or inside a wall requires specialized technology, not guesswork. Prestige Plumbing Company uses sensitive acoustic listening devices, thermal imaging cameras, and precise line-tracing equipment to pinpoint the exact location of a pipe failure before a single hammer swings.
Once located, we present you with the best repair options. We rarely advise breaking up large sections of your floor; instead, we specialize in rerouting the compromised line through the attic or walls using modern, durable PEX tubing, permanently bypassing the under-slab hazard.
Benefits Of Professional Leak Detection & Slab Leaks
- Non-destructive leak locating protects your home from unnecessary damage
- Thermal and acoustic technology pinpoints leaks with inch-level accuracy
- Clear, upfront options for direct repair vs. overhead line rerouting
- Minimization of water damage and mold risk through rapid response
- Assistance with documentation for homeowner's insurance claims
The Slab Leak Reroute
When a copper line fails beneath your foundation, repairing that specific spot (a 'spot repair') requires jackhammering the floor. While sometimes necessary, it is often a temporary fix, as the rest of the copper line remains buried and vulnerable to the same soil and water chemistry that caused the first leak.
Our preferred and recommended solution is a reroute. We cap the failing line at both ends under the slab, abandoning it completely. We then run a new, flexible PEX line through the attic and drop it down the walls to feed the affected fixtures. This permanently removes the plumbing from the hostile under-slab environment.
Common Problems We Solve
- Pinhole leaks in under-slab copper piping (Slab Leaks)
- Slow leaks behind shower valves and in-wall manifolds
- Undetected irrigation or main water service line leaks in the yard
- Degraded polybutylene or older galvanized steel pipe failures
Signs You Need This Service
- An inexplicably high monthly water bill
- Warm or hot spots on hard surface flooring (tile or laminate)
- The sound of water running when all fixtures are turned off
- Baseboards swelling or pulling away from the wall
- A damp, musty odor or unexplained mold growth
Our Process
- 1
Test
We pressure test the hot and cold systems to determine which side is losing pressure.
- 2
Locate
Using acoustic and thermal gear, we trace the lines and pinpoint the exact source of the leak.
- 3
Plan
We draft a repair plan — either a direct spot repair or an overhead line reroute.
- 4
Execute
We complete the repair, restore water service, and verify the system holds pressure.
Maintenance Tips
- Monitor your water bill monthly for unexplained spikes
- Check your water meter overnight to see if the dial moves when water is off
- Install a smart leak detection system that monitors flow anomalies
- Address abnormally high municipal water pressure with a PRV
Why Choose Prestige Plumbing Company
We have been a family owned, licensed, bonded and insured plumbing contractor in Mesa. Every leak detection & slab leaks job is quoted flat-rate in writing before we begin, performed to Arizona plumbing code, documented with photographs, and backed by a workmanship warranty. We serve Mesa, Phoenix, Chandler, Gilbert, Tempe, Scottsdale and the wider East Valley 24 hours a day.
Leak Detection & Slab Leaks Frequently Asked Questions
Does homeowner's insurance cover slab leaks?+
Insurance typically covers the damage caused by the water (drywall, flooring, cabinets) and the cost to access the pipe, but rarely the cost of the plumbing repair itself. We can provide the detailed documentation your adjuster needs.
Why do copper pipes leak under the slab?+
A combination of factors: aggressive mineral chemistry in Arizona water pitting the pipe from the inside, shifting soils rubbing the pipe against rocks or concrete, and poor initial installation practices.
How long does a slab leak reroute take?+
Most single-line reroutes are completed in one to two days. Your water is usually only turned off for a few hours during the actual tie-in phase.
Is PEX safe to use for a reroute?+
Yes. Cross-linked polyethylene (PEX) is the industry standard for repiping and reroutes. It is highly durable, expands instead of bursting if frozen, and is immune to the mineral scaling that destroys copper.
Ready For Expert Leak Detection & Slab Leaks?
Licensed, bonded and insured plumbers answering 24 hours a day across Mesa and the Phoenix metro. Free estimates on replacement work.