Slab leaks deserve respect in Schertz because the local soil makes them more likely and more damaging. As San Antonio Area clay swells and shrinks, it stresses the water lines cast into or buried beneath the slab. A leak there does not just waste water: it washes out the soil supporting the foundation, and an unsupported slab cracks. Catching it early is the difference between a targeted repair and foundation work. If the signs fit, get it checked this week. Call (833) 834-1087.
If the leak turns out to be under the slab, know your options before the repair visit: a targeted spot repair through the slab, or rerouting the line overhead through walls and attic, abandoning the buried section. Each suits different situations, and we quote both with the trade-offs explained, so you choose with full information.
How leak detection works
Leak detection is applied physics, and the order of operations matters. We start with pressure: the system is divided into zones, supply branches, irrigation, the service line, and each is pressurized and watched. A zone that will not hold pressure is the leaking zone, and that single test eliminates most of the house from suspicion. Next comes sound: pressurized water escaping through a pinhole creates a distinct high-frequency hiss, and acoustic sensors with ground microphones amplify it while filtering ambient noise. The tech sweeps the slab or yard in a grid, and the sound peaks directly over the leak. Thermal imaging adds a second witness: escaping water changes the temperature of the surrounding slab or soil, and an infrared camera renders that difference as a visible pattern. Used together, pressure isolates, acoustics pinpoint, thermal confirms, and the repair opening lands on the leak, not near it. In Schertz, where San Antonio Area soils complicate everything buried, this methodical sequence is what keeps a detection visit from becoming an excavation project.
Signs you need leak detection in Schertz
- Warm spots on a concrete slab floor.
- The sound of running water when every fixture is off.
- Cracks appearing in floors, walls, or tile.
- Recurring clogs in a home shaded by big old trees.
- A water bill creeping up with no visible leak.
What’s included
- Non-invasive detection first, always
- Fixture and irrigation elimination before buried-leak hunting
- Thermal and acoustic cross-confirmation of the location
- Marked repair point, so openings are small and targeted
- Pressure test after repair to prove the fix held
San Antonio Area: how local conditions affect leak detection
Clay and caliche soils keep San Antonio-area slabs in motion, and moving slabs open leaks. Seasonal wet-dry cycles flex foundations, stressing water lines at slab entries and direction changes until pinholes open. The signatures are the classics: warm floor spots over hot-line leaks, bills that jump, the sound of running water with everything off. Schertz homes showing these signs need detection this week, because escaping water erodes supporting soil and turns plumbing repairs into foundation work.
Century-old pipe adds the wall-leak dimension. Galvanized supply lines inside plaster and drywall corrode from the inside out, and slow drips soak framing for months before staining appears. Moisture mapping and thermal imaging trace these to their source without exploratory demolition, which matters enormously in historic Schertz homes where every opening is a restoration project. Measure first, open once.
Caliche complicates the repair side, which makes precise detection more valuable here, not less. Digging through caliche is slow and expensive, so a marked location backed by acoustic and thermal readings saves real money on every buried repair. Our detection reports give the repair crew, and your insurance adjuster, exact locations with readings and photos, turning a dreaded project into a planned one.
What affects the cost of leak detection in Schertz
What the leak has already damaged affects the total. A leak caught from a bill spike may need only the pipe repair. One that has been running for months can mean mold remediation, damaged flooring, or compromised sub-slab soil, which are separate trades with separate costs. Our detection report documents visible damage honestly so you can plan, and we coordinate with the repair crew to keep the plumbing scope tight and clear. In Schertz, early detection is genuinely the difference between a plumbing bill and a construction project.
- Extent of secondary damage: mold, flooring, finishes
- How long the leak has been active
- Whether soil under the slab needs attention
- Plumbing scope kept separate from restoration scope
Common questions
How do you find a leak under concrete?
Acoustic sensors, thermal imaging, and pressure tests triangulate the spot. We open concrete only where the leak actually is, and the opening is small and targeted.
Is a slab leak an emergency?
It can wait days, not months. Unchecked leaks erode soil under the slab and invite foundation trouble, so this week beats next month.
What does leak detection cost?
The detection visit is flat-rate and includes the full investigation plus a written report. The repair is quoted separately once we know what and where the problem is.
Can you detect leaks in walls too?
Yes. Moisture mapping and thermal imaging trace wall and ceiling leaks to their source, and we open surgically once, in the right place.
Does hard water really matter?
It cuts water heater life and clogs fixtures. A softener is one of the highest-return improvements for a home here.
More plumbing help in Schertz
Start at our plumber in Schertz hub or the full Leak & Slab Detection guide. Related in Schertz: Gas Line Services in Schertz, Water Treatment & Filtration in Schertz, Emergency Plumbing in Schertz, Water Heater Installation & Repair in Schertz, Drain Cleaning in Schertz, Sewer Line Services in Schertz, Whole-Home Repiping in Schertz. Leak & Slab Detection nearby: Leak & Slab Detection in Universal City, Leak & Slab Detection in Live Oak, Leak & Slab Detection in San Antonio, Leak & Slab Detection in New Braunfels.
Don’t let a small problem become a big one. Call (833) 834-1087 today for upfront flat-rate pricing in Schertz.
Other services in Schertz.
Emergency Plumbing
Emergency plumbing is immediate response to water damage in progress — burst pipes, major leaks, sewage backups, and total water loss. You reach a live dispatcher who triages the situation on the call and routes a stocked truck immediately, so the water stops as fast as possible.
Water Heater Installation & Repair
A water heater supplies hot water to every faucet, shower, and appliance in your home — tank models store it, tankless models heat it on demand. We repair failed burners, thermostats, and heating elements, and size replacements to your household’s actual hot-water demand so the showers stay hot.
Drain Cleaning
Drain cleaning removes the blockages that slow or stop wastewater flow — grease, soap, hair, scale, and root intrusion. We match the tool to the clog: drain snakes for branch lines, inspection cameras for diagnosis, and hydro jetting to scour the pipe wall on main-line stoppages.
Sewer Line Services
A sewer line carries all wastewater from your home to the city main, so a failure here backs up every drain at once. We inspect with an HD camera first, then clear root intrusion or repair damaged sections — replacing the line only when the pipe itself is truly done.
Whole-Home Repiping
Repiping replaces every water supply line in the home at once, ending the cycle of one leak after another. We install new PEX or copper pipe through minimal wall openings, pressure-test the system, and leave it up to current code.
Gas Line Services
Gas lines feed stoves, water heaters, dryers, and grills — and any work on them has to be exact. We repair damaged sections, extend lines for new appliances, and set new appliance hookups, pressure-testing every joint before the job is signed off.
Water Treatment & Filtration
Water treatment conditions your supply water so mineral hardness and contaminants stop damaging fixtures, appliances, and the water heater. We test your water first, then install whole-home softeners and filtration matched to what the test shows.
Leak & Slab Detection in these other communities:
A plumbing problem gets worse, not better.
Leaks soak through framing and flooring the longer they run. One call puts a licensed plumber on the way — day, night, weekends, holidays.
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