Slab Leak Detection

A slab leak means a water line under your concrete foundation is leaking — and left untreated it can erode soil, crack the slab, and cause major structural damage. Sawgrass Construction Solutions Leak Detection pinpoints slab leaks using electronic listening and thermal imaging so the leak is found before any concrete is broken.

How do I know if I have a slab leak?

The clearest signs of a slab leak are a warm spot on a tile or concrete floor (hot water leak), unexplained high water bills, the sound of running water with all fixtures off, or damp baseboards and carpet at the floor edge. Slab leaks rarely fix themselves — once you suspect one, get it diagnosed quickly to limit foundation damage.

• Warm spot on a tile or concrete floor
• High water bills with no usage change
• Sound of running water under the floor
• Damp carpet, baseboard, or wall at floor level
• Cracks appearing in tile or concrete flooring
• Mildew smell near the floor

How is a slab leak located without breaking the floor?

We isolate the leak to either the hot or cold supply system using a pressure test, then sweep the floor with electronic ground microphones to hear the leak's exact location. For hot water leaks, thermal imaging cameras add a second confirmation by showing the temperature anomaly through tile or concrete. The leak is marked to within inches before a single piece of flooring is removed.

What does slab leak detection cost?

Slab leak detection typically runs $400-$700. The variation depends on the size of the home and how much isolation testing is required. We provide a flat-rate quote upfront and never charge by the hour. If we can't locate the leak with our standard methods, you don't pay for the inspection.

How long does slab leak detection take?

Most slab leak detection jobs take 2 to 3 hours on site. We isolate the system, sweep the suspected areas with listening and thermal equipment, and mark the leak before leaving. You'll have a clear written diagnosis and repair quote in hand the same day.

Can a slab leak be repaired without tearing up the whole floor?

Yes — in most cases. With the leak pinpointed accurately, repair options include spot repair (cutting only the immediate area), pipe rerouting through the wall or attic to bypass the slab section, or full repipe. We discuss all options after detection so you can choose what fits your budget and timeline.

Why choose a local Northeast Florida slab leak company?

Sawgrass has 40+ years of foundation experience across Duval, St Johns, and Clay counties. We know which subdivisions used post-tension slabs, which used original copper, and where soil conditions accelerate failures. That local pattern knowledge means faster, more accurate diagnosis.