A slab leak — a supply line leaking beneath the concrete foundation of your home — is the most expensive leak we're called about, and almost never because the pipe itself was costly. It's expensive because it went unnoticed while the water quietly undermined flooring, subfloor, and sometimes the foundation edge. Caught early, it's a routine repair.
The clues are consistent. Hot spots on the floor are the classic one: a leak in a hot-water line under the slab turns a patch of tile or hardwood into a heated floor you didn't ask for. Your water heater compensating by running constantly is the same story told from the other end. If the heater fires up at 2 AM with nobody having used a drop, something is moving water.
You'll often hear it before you see it. The sound of running water with every fixture closed off — especially at night when the house is quiet — is the sound of a leak doing its work. Add an unexplained spike in the water bill and damp soil around the edge of the foundation, and the picture is complete.
Why Austin? The expansive clay soil under much of Central Texas swells with rain and shrinks in a long dry spell, and that seasonal movement flexes the copper lines embedded in the slab. Homes fifteen to thirty years old are right in the window where those lines start to give — pinhole leaks at first, then failures that won't stay patched.
Don't ignore it and don't jackhammer on a guess. We pressure-isolate the lines to confirm which run is leaking, then locate the exact point before any concrete is opened. Often the right answer is rerouting a new line through the attic or walls rather than breaking the floor at all — less mess, less cost, and the failed line is abandoned for good.
Warm floor, phantom running water, or a bill that doesn't make sense? Call Smoke Test Client at +1 512 555 0166 for a free estimate anywhere in Austin.