Corona Slab Leak Detection & Repair in Corona, CA
Under-foundation leak detection and repair for Corona homes built over a concrete slab, found before any concrete gets broken open.
What A Slab Leak Actually Looks Like
A Warm Patch On The Floor
A hot water line leaking under the slab warms the concrete above it. If one spot on the floor is noticeably warmer than the rest, that is a strong sign.
Water Near The Foundation Edge
Moisture showing up along a garage wall or where the slab meets the foundation, especially with no obvious outside source, often traces back underneath the house.
A Water Bill With No Explanation
Slab leaks run continuously and quietly, so the water bill is frequently the first real clue, well before any visible sign appears.
Low Water Pressure In One Area
A slab leak can drop pressure to whichever fixtures share that line, while the rest of the house pressure stays normal.
Foundation-Age Plumbing In This Market
A large share of central and south Corona was built in the 1960s and 1970s, when copper supply lines were routed directly under the concrete slab rather than through interior walls. Fifty-plus years underground, even good copper develops pinhole leaks from soil chemistry, minor ground movement, and simple age. Once a line fails under the slab, the water has nowhere to go but up through the concrete or sideways toward the foundation edge. That is why the two most common first signs are a warm floor spot and a rising water bill, not anything obviously wrong with a fixture.
Finding The Leak Without Breaking Concrete
Acoustic Ground Detection
Ground microphones pick up the specific sound pressurized water makes escaping a line under concrete, narrowing the search to a small area.
Thermal Imaging
A thermal camera reads the temperature difference a hot water slab leak creates on the surface above it, often confirming the warm-spot symptom directly.
Pressure Isolation Testing
Isolating sections of the plumbing system and testing pressure narrows down which line is losing water, hot or cold side.
Video Line Inspection
Where access allows, a video camera can confirm a line's condition directly rather than relying on sound and heat alone.
Water Coming Up Through The Floor?
The sooner a slab leak is confirmed, the less water damage spreads under the flooring.
Common Ways People Describe This Before They Know It's A Slab Leak
Most calls about this do not start with the words slab leak. They start with a warm spot that will not go away, a driveway that stays damp for no reason, or a water bill that jumped and nobody can explain why. Any of those is enough reason to have it checked. We start from the symptom you actually have and work backward to the cause, rather than needing you to diagnose it first.
What To Do Before We Arrive
Know Your Main Shutoff
If the leak is significant, shutting off the main water valve stops it from getting worse while you wait, even though it means no water in the house until the repair.
Pull Up Damp Flooring If You Can
Carpet or laminate sitting on wet concrete for days raises real mold risk. Pulling back what you safely can helps it dry and gives us clearer access to check the area.
Photograph The Warm Spot Or Damp Area
A photo with a timestamp is useful both for your own insurance claim and for us to compare against once the repair is finished.
Repairs Follow Standard Code
Any slab leak repair we perform follows standard UPC plumbing code practices for the repair method used, whether that is direct access or a reroute.
How A Slab Leak Actually Gets Fixed
Direct Slab Access
- Concrete is opened at the confirmed leak point.
- Fastest option when the leak is in one clear spot.
- Best for a single, well-isolated leak.
Reroute Or Repipe
- The damaged section is abandoned and a new line is run through walls or the attic instead.
- Avoids breaking concrete entirely.
- Often the better call on an older home with multiple aging lines.
What Affects Slab Leak Repair Cost
A sudden slab leak is often a covered peril under homeowner insurance, while gradual, long-term seepage sometimes is not. We can document what we find for your claim, but the coverage decision itself is your insurer's call.
Common Questions
No. Acoustic and thermal detection locate it first. Concrete or flooring only gets opened once the leak is confirmed and you have approved a repair path.
Not always. A single isolated leak in an otherwise sound line is often fastest and cheapest to access directly. Multiple aging lines is where rerouting tends to make more sense.
Often for sudden leaks, less often for gradual ones. We provide documentation either way.
The leak itself is not usually an emergency, but water sitting under flooring for weeks raises the risk of mold and flooring damage, so sooner is meaningfully better than later.