AZ ROC 354554 · Phoenix metro
Slab leak repair in Phoenix
Under a Phoenix slab, a copper line sits in dirt and moves every time the water in it heats. When one finally wears through, the water has nowhere to go but up through the concrete. We locate it before anyone breaks anything — that’s what the $129 diagnostic buys, and it comes off the bill when you approve the repair.
You’re here because…
- A warm patch on the floor you can feel through your feet
- The sound of running water when every fixture is off
- A water bill that jumped with nothing else changing
- Damp carpet, or a dark line in the tile grout, with nothing above it
- The hot side losing pressure while the cold stays fine
- A water heater that cycles more than it used to
- Cracking in the slab, or tile lifting in one area
Included in the price
- Locating the leak before any concrete is opened
- Isolating hot from cold, so nobody is guessing which line it is
- Both options priced — rerouting the line, or opening the slab
- Full pressure test after the repair
- 1-year warranty on parts and workmanship
Not included
- Flooring restoration — tile, carpet and finish work over the repair
- Drywall and paint, where a reroute runs through a wall
- Permits, which vary by city and scope
- Remediation, if the leak has been running long enough to need it
Naming these up front is the point. They’re the most common surprise on a final invoice in this trade.
How the job goes
- 01
Confirm it at the meter
Everything in the house off, then watch the meter. If it’s still turning, water is going somewhere — and that’s worth knowing before anyone touches a floor.
- 02
Isolate hot from cold
Most slab leaks are on the hot side, because that’s the line that expands and rubs. Narrowing it to one line halves the area anybody has to search.
- 03
Locate it, then decide
The whole point of locating properly is the smallest opening that fixes the problem. Every square foot opened on a guess is concrete and flooring you pay to put back.
- 04
Reroute, or open the slab
A reroute abandons the bad section and runs a new line overhead. Opening the slab repairs it where it lies. Which one is cheaper depends entirely on where the leak is and what’s on top of it — you get both prices, not the one that suits us.
Questions we get
How do I know it’s a slab leak and not something else?
The tell most people notice first is a warm spot on the floor, because the hot line is usually the one that goes. After that: running water you can hear with everything off, a bill that climbed without a change in habits, and damp appearing with nothing above it. Any one of those is worth a visit; two of them together usually means the slab.
Do you have to jackhammer my floor?
Not always, and it’s the first thing we try to avoid. A reroute abandons the failed section under the concrete and runs a new line overhead instead, which on a lot of houses is both cheaper and finished sooner than breaking, repairing, and re-laying a floor.
Reroute or repair in place — which one is cheaper?
Genuinely depends. A leak under a hallway with a short run overhead is often simplest to reroute. A leak under new tile or a kitchen island can be cheaper to reroute for the same reason — the plumbing is the small part of that bill. Somewhere with easy access and nothing precious on top, opening it can win. You get both numbers and pick.
Will my insurance cover it?
Policies differ and we’re plumbers, not adjusters — so ask your carrier before the work starts rather than after. What we can give you is a written scope and photographs of what we found, which is what a carrier asks for. Many policies treat the resulting damage differently from the pipe itself, so it’s worth the phone call.
Is the $129 diagnostic charged on top of the repair?
No — it comes off. The $129 covers finding something nobody can see, which is most of the skill in a slab leak. Approve the repair and it’s waived. Estimates on work we can actually see are free, always.
Why isn’t there a price on this page?
Because where the leak is decides the job. The same failed inch of copper is a straightforward reroute under a hallway and a serious morning under a tiled kitchen island. Publishing one number would mean quoting the second job at the first job’s price, or the first at the second’s — and both of those are a way of being wrong in writing.
Ready when you are.
Pick a two-hour arrival window. We confirm within the hour during business hours.
No trip fee · No after-hours charge · Free estimates on work we can see · $129 to find what we can’t, waived when you approve the repair