Professional Slab Leak Detection & Repair Services

A slab leak is a leak in a water or sewer pipe that runs beneath the concrete foundation (slab) of your home. Because these pipes are encased in or beneath concrete, leaks are invisible until secondary symptoms appear — and by that time, significant damage may already be occurring to your foundation, flooring, and substructure.

Slab leaks are most common in homes built on concrete slab foundations where copper supply lines were embedded in or beneath the slab during construction. Over time, the copper reacts with minerals in the soil and concrete (a process called electrolysis), developing pinhole leaks that slowly saturate the soil and concrete around them. Hot water lines are particularly vulnerable because thermal expansion accelerates the corrosion process.

Detecting slab leaks requires specialized equipment. Licensed plumbers use electronic leak detection (amplifying the sound of pressurized water escaping through concrete), helium or hydrogen tracer gas (injected into the line and detected at the surface with a sensitive sensor), thermal imaging (hot water leaks create temperature differentials visible on the slab surface), and pressure testing (isolating individual lines to identify which one is losing pressure).

Repair options include spot repair (opening the slab at the leak location, repairing the pipe, and re-pouring the concrete), tunnel-under repair (accessing the pipe from outside the foundation perimeter to avoid interior demolition), and full reroute (abandoning the under-slab pipe entirely and running a new line through the attic or walls). Rerouting is often the best long-term solution because it eliminates all under-slab pipes, preventing future slab leaks in the same lines.