Slab Leak Detection & Repair in Irving, TX

Irving sits on the Eagle Ford Shale and Austin Chalk expansive-clay belt that underlies most of Dallas County, with a plasticity index commonly measured at 40 to 60 or higher. That clay swells during wet periods and contracts through North Texas's hot, dry summers, and because most Irving homes are built slab-on-grade, the copper and cast-iron lines poured into the concrete move with the ground instead of staying still. Years of that cycling abrade and eventually crack a line at a joint or stress point — the leak that follows is what everyone calls a slab leak. It's less a single bad pipe than a foundation-wide pattern showing up first at its weakest point.

The most common first sign is a water bill that jumps with no change in household usage, followed by a warm spot on an otherwise normal section of flooring, which usually points to a hot-side line leaking under the slab. The sound of running water when every fixture in the house is off is another clear signal, along with new hairline cracks in flooring or drywall near the foundation line. A damp or musty smell that won't clear is worth checking too. Any one of these alone is worth a call; two or more together usually means a leak is already established.

Slab leak repair typically runs $2,000 to $6,000 or more, depending on whether the fix is a targeted spot repair or a full reroute above the slab. A single accessible spot repair sits toward the lower end of that range, while a longer overhead re-pipe covering multiple fixtures runs closer to the top. Electronic or acoustic leak detection to find the leak first typically costs $150 to $600, and that cost is usually credited toward the repair if you move forward the same visit. You get a fixed, written quote based on the leak actually found, not a phone estimate.

Sudden, accidental water damage from a slab leak is often covered by a standard homeowners policy, though coverage for the detection survey and the repair itself varies by carrier, and many policies draw a line between damage the leak caused and the cost of fixing the pipe. Gradual damage from a leak left unaddressed for months is more likely to be excluded than one that surfaced quickly. We provide a written invoice and, where relevant, detection-survey documentation that most adjusters ask for when a claim is filed. It's worth calling your carrier directly once a leak is confirmed.

Electronic and acoustic leak detection equipment listens for the specific sound of pressurized water escaping through concrete, narrowing the leak's location to a small area rather than an entire room. A full survey typically takes one to two hours and happens before any concrete comes up, which keeps the eventual repair to one targeted opening instead of exploratory holes. Isolating sections of the plumbing and watching pressure drop is often the fastest first step, showing which zone the leak is in before equipment leaves the truck. Hot- and cold-side lines sometimes need slightly different listening approaches.

A spot repair opens the smallest possible section of slab directly over the pinpointed leak, replaces or patches that length of pipe, and closes the concrete back up — the faster option when the rest of the line is sound. A reroute, or overhead re-pipe, runs a new PEX line above the slab through the attic or exterior walls instead, bypassing the damaged section and the clay movement underneath it entirely. Reroutes make more sense when a line has already failed more than once, or when jackhammering to reach it would cost more than running a new line above ground. Spot repairs typically finish in a day; reroutes take two to three.

Most slab leak repairs run one to three days total, measured from detection through the final pressure test. A single accessible spot repair often finishes within a single day, including cutting the access point, replacing the line, and closing the concrete. A full reroute above the slab, or a repair involving multiple failed sections, runs closer to two to three days. Every job gets pressure-tested against normal house pressure before the crew calls it finished, confirming the fix holds before anyone's walking on a patched floor.

Yes — a hot-side slab leak often shows up as a warm spot on the floor because the escaping water carries heat with it, one of the clearer early signs homeowners actually notice. A cold-side leak rarely produces that temperature signal, so it's usually caught later through a rising water bill or the sound of running water rather than a warm patch underfoot. Both are found the same way, acoustically, but a technician reads the two situations differently walking in. Hot-line leaks also tend to accelerate pinhole corrosion faster in aging copper, since heat cycling adds to the clay-movement stress already on the line.

Not in the same way — a true slab leak specifically describes a line failing under a poured concrete slab-on-grade foundation, and a pier-and-beam home's plumbing runs through an open crawlspace instead, so there's no slab to leak under. Older pier-and-beam construction in the area has its own failure pattern: exposed lines in an unconditioned crawlspace corrode and fail differently than a line encased in concrete, and a leak there is usually easier to spot and access than one buried under a foundation. Confirming which foundation type your home has is one of the first things we check, since it changes the detection and repair approach.

Winter Storm Uri in February 2021 drove more than 500,000 insurance claims and roughly $10.3 billion in losses across Texas, with about 85 percent tied to property damage like burst pipes rather than a slab leak specifically. The freeze itself mostly hit exposed and above-ground lines, not ones already sealed under a slab, but the extreme freeze-thaw cycle that week added one more round of stress to a foundation already moving with North Texas's clay. Homes with copper or cast-iron lines original to 1970s-80s construction saw both kinds of failures in the weeks after — burst exposed lines and slab leaks that had been building for years finally showing themselves.