Slab Leak Detection in Phoenix

Confirming there is a leak at all

Detection starts at the water meter, not on the floor. With every fixture off, the leak indicator should sit still. If it turns, we close the house shut-off and watch again to tell a leak inside the house from one in the service line out to the street. Then each branch is isolated and put under pressure with a gauge. A line that holds is ruled out; one that drops is the one worth chasing. Separating hot from cold matters early, because a hot line changes the tools we reach for and usually means a warm patch somewhere on the floor.

Tracing where the pipe actually runs

Nobody has a drawing of the copper under a tract home poured forty years ago. Lines rarely take the shortest path between the water heater and the fixtures, so a warm tile in the hallway may sit over a pipe feeding a bathroom two rooms away. We map each suspect line with a pipe locator, following it from where it drops into the slab to where it rises at a fixture. Knowing the route keeps the search on the right strip of floor and shows whether a spot repair or a reroute is even practical once the leak is found.

Listening and heat imaging

Water forced through a pinhole under pressure makes a sound that carries through concrete. A ground microphone set down on tile, stone or bare slab picks it up, and the technician moves it along the traced line comparing how loud and how sharp the noise is at each point. On a hot line, a thermal camera adds a second, independent reading: the slab over the leak holds heat, and the image shows where that heat is centred. When the two methods agree on one area, it gets marked on the floor with tape so you can see exactly where any opening would go.

What you get in writing

Each visit ends with written findings: which line is leaking, how it was confirmed, where the mark is, and the repair options that fit. Insurers generally want that document before they decide on a claim for opening the floor or for water damage. It also lets you compare quotes on the same basis. On a Scottsdale or Paradise Valley home with long runs to a distant wing, or an older block home in Tempe that has already been patched once, the findings often point toward a repipe rather than another hole in the floor.

How long does it take? A detection visit usually takes two to four hours, depending on how many lines need testing and how the house is laid out.

Frequently asked questions