Phoenix Valley slab leaks
A spot repair goes straight down through the floor at the leak that detection marked. The damaged section of pipe is cut out and replaced, pressure tested, then covered with compacted sand and a new concrete patch. It suits one leak on pipe that is otherwise sound, in open floor that can be lifted. Tile or wood on top is either patched with matching pieces or left rough for your flooring installer.
A direct-access repair goes straight down through the spot that detection marked. Furniture comes out of the way, plastic sheeting and floor protection go down, and the flooring is lifted or cut back from a patch a little larger than the opening. The concrete is then saw-cut in a neat square and broken out with hand tools, not a jackhammer swinging across the room. Cutting concrete indoors makes fine dust, so dust control and a vacuum on the saw are part of the job rather than an afterthought. The hole is sized to give room to work on the pipe and no bigger.
Under the slab the soil is dug away until the leaking pipe is exposed on both sides of the damage. The failed piece of copper is cut out and a new section is joined in, and the exposed pipe on either side is looked at closely. If the wall is thin, pitted green or scaled, that is noted in writing because it says something about the rest of the line. Before anything is covered, the line is pressure tested again to confirm the repair holds. Where the pipe was rubbing against rebar or rough concrete, it is sleeved so the same wear does not start again in the same spot.
The hole is refilled with clean sand around the pipe, compacted in layers, and topped with a fresh concrete patch finished level with the old slab. What sits on top of that patch is the part homeowners ask about most. Carpet usually goes straight back down. Tile and wood depend on whether spare pieces exist from the original install; many Valley homes have leftover tile in the garage, and it is worth checking before the floor is opened. If not, the patch can be left rough for your flooring installer.
Opening the slab makes sense for a single leak on pipe that otherwise looks healthy, in a spot that can be reached. It is a harder sell under kitchen cabinets, a tub or a large run of stone you want to keep. It is also a weak answer to a line that has already leaked once. In those cases a reroute leaves the floor alone, and repeat pinholes across the house point to a whole-house repipe. If the spot has not been confirmed yet, start with detection.
How long does it take? Usually one to two days for the plumbing and concrete, with the floor finish handled after the patch cures.
These often come up on the same house, and can be planned from the same visit:
Meter and pressure tests, acoustic listening and thermal imaging to find which line is leaking and where, before any floor is opened.
How it works →Abandon the leaking line under the slab and run a new PEX or copper line through the walls or attic, with no concrete cut.
How it works →Replace every hot and cold supply line in the house, usually overhead in PEX, when leaks keep coming back on old pipe.
How it works →Leak detection request
Tell us what you’re noticing and what the water meter did. We call back to set a time.
We’ll call to set a time. If water is coming up now, call (602) 555-0147
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