Our phone line is open 24/7 for slab leaks. While you wait, turn the main shutoff clockwise to stop the flow, and keep shoes on if the floor feels hot or wet.
Slab leaks are common in older concrete-floor homes. We confirm the leak with a pressure test, find the exact spot using leak detection methods and explain your repair options before work starts.
Slab leak emergency: stop the water right now
A hot floor, a hissing sound or water bubbling through a crack means pressurized water is escaping under the house. Shut off the main valve first, usually near the front hose bib or at the meter side of the house.
If the floor is warm, the leak may be on the hot line from the water heater. Turn the water heater to pilot or off at the thermostat so it does not keep heating a draining tank, and keep children off damp flooring.
Do this while you wait
- Close the main water shutoff clockwise
- Turn the water heater to pilot or off
- Lift rugs and furniture off wet flooring
- Do not run the dishwasher or washer
- Photograph damage for your insurer
- Avoid wet floors near outlets
Warm floors, hissing and a runaway bill: the telltale signs
Most slab leaks announce themselves quietly. You may notice a warm patch near a bedroom wall, the sound of water at night or a meter that moves with everything off.
Other clues include cracked tile, damp carpet along baseboards and sudden low pressure. One sign alone is not proof, which is why we test before recommending a repair.
| Sign | What it suggests | Next step |
|---|---|---|
| Warm spot on floor | Hot supply line leaking | Thermal scan and pressure test |
| Sound of running water | Pressurized leak somewhere | Acoustic listening |
| Meter moves, fixtures off | Active leak on your side | Isolate house from service line |
| Wet carpet at wall base | Leak close to the surface | Moisture mapping |
| Musty smell, mold spots | Long-term seep | Locate, then plan repair |
Need slab leak repair in Westminster? Our phone line is open 24/7.
Call (714) 750-8637Why older Westminster slab homes see leaks
The median Westminster home dates to about 1971, and most neighborhoods were built during the 1960s boom. Many of those houses have copper lines embedded in or under the slab, now more than fifty years old.
Copper under concrete can wear from outside as soil moisture and movement rub against the tube. Add pressure surges from the system and you get pinholes that weep slowly. That is why a house that has never had a leak can suddenly show one. A leak outside the footprint, between the meter and the house, is a different job covered under water line repair.
Westminster water averages 252 mg/L hardness, roughly 14.7 grains per gallon, with a pH near 7.9. Scale builds inside lines and fittings over time, and it can speed up trouble at joints and valves.
How we locate the leak before opening the floor
First comes a pressure test on the hot and cold lines separately, which tells us which side is leaking. Then we listen with acoustic equipment and scan for temperature differences.
The goal is a small, marked target. If we know the leak sits under the kitchen doorway, we cut there instead of guessing across three rooms. We will tell you what we found and what each repair path means for the rest of the house.
Same-day appointments are offered when available. Call to ask about slab leak repair.
Call (714) 750-8637Slab leak repair options compared
There is no single right fix. The best choice depends on where the leak is, how old the lines are and whether more leaks are likely. If the lines are worn throughout, repiping may make more sense than a patch.
| Option | How it works | Best when |
|---|---|---|
| Spot repair under the slab | Cut the floor, expose the pipe, repair the section | One isolated leak, lines otherwise sound |
| Reroute through attic or walls | Abandon the slab line and run new pipe overhead or in walls | Leak is hard to reach or lines are failing |
| Repipe the affected circuit | Replace the whole run with new pipe | Multiple leaks or old, thin copper |
| Epoxy lining | Coat the inside of the pipe | Select situations after inspection |
Rerouting usually means small openings in drywall and some patching, but the floor stays intact. Spot repair is quicker in some homes yet leaves a patched square in the slab.
Flooring, drywall and your insurance company
Water under a slab can lift laminate, warp wood and stain tile grout. Take photos before anything is moved and keep any damaged materials until your insurer says otherwise.
Call your insurance company early, because they may want a written leak report before approving repairs. We cannot say what a policy covers, so ask them directly what documentation they need.
Getting ready for the visit
A little preparation shortens the job. Clear a path to the main shutoff and the water heater, and put pets in a quiet room.
Tell us when you first noticed the sign, because timing helps us judge how long the leak has run. We give you a clear price before work starts, and no work begins until you approve it.
Before we arrive
- Clear access to the main shutoff
- Note where floors feel warm or damp
- Write down your latest meter reading
- Move small furniture from the suspect area
- Gather any insurer contact details
Slab leaks and Westminster rentals
About 47 percent of Westminster households rent. Tenants should report floor dampness to the landlord in writing and shut off the main if water is active.
Owners of rental property should schedule diagnosis promptly, since a leak that runs under a unit can drive up the bill and lead to mold. Our team can discuss options with whoever manages the building.
Pipe rerouting and repiping are covered by the California Plumbing Code (Title 24, Part 5), and the City Building Division, (714) 548-3254, can say whether a permit applies. According to the City of Westminster's 2024 Water Quality Report, local water averages about 252 mg/L hardness, a factor in copper pipe wear.
Slab leak questions from Westminster homeowners
Do you handle slab leak emergencies at night or on weekends in Westminster?
Yes. The phone line is answered 24/7, including nights, weekends and holidays. Call, say what you notice, and shut off the main valve while you wait.
How do I know my floor has a slab leak?
Common signs are a warm spot on the floor, the sound of water at night, a meter that moves with everything off and an unexplained jump in the bill. A pressure test confirms it.
Do you have to break the concrete?
Not always. Rerouting the line through the attic or walls avoids cutting the slab. When a spot repair is the best choice, we cut a small section at the marked location.
Is a slab leak dangerous?
The water itself is not usually harmful, but it can weaken soil, damage flooring and cause mold. A hot slab line can scald, so avoid standing barefoot on a warm spot.
Will my insurance cover a slab leak?
We cannot say what any policy covers. Call your insurer early, ask what documents they need and keep photos and repair records.
How long does a slab leak repair take?
It depends on the repair path and the floor. A spot repair may be done in a day, while a reroute or repipe takes longer. We explain the schedule before starting.