A slab leak is a water pipe leaking below or within a concrete floor. It gets fixed by opening the concrete at the exact spot, bypassing the buried pipe with a new overhead run, or replacing the failing piping. Call the number on this page to be connected with a local plumber in Winston-Salem.

First, confirm the house is on a slab
Plenty of Winston-Salem houses, especially in older areas like West End and Ardmore, sit over crawl spaces or basements. In those homes the pipes hang where a plumber can reach them, and a leak is an ordinary repair rather than a slab job. True slab leaks happen in houses, additions and garages poured directly on concrete.
What a slab leak looks like
- A warm stripe or spot on tile or bare concrete, which points to the hot line
- Running-water noise from the floor when every fixture is off
- Floors that buckle, stain or smell musty along one path
- Cracks that appear in the floor or baseboards pulling away
- A water bill from City-County Utilities that keeps rising for no clear reason
A test you can run tonight
Turn off everything that uses water, including the ice maker and irrigation. Watch the meter's low-flow indicator for several minutes. Movement means a leak somewhere. Then close the house's main shutoff. If the meter still moves, the loss is probably on the buried line in the yard; if it stops, look inside the house and under the floor.
How the leak gets found
The plumber splits the system into hot and cold and checks which side drops pressure. Listening equipment picks up the leak's sound through the concrete, and thermal imaging can follow a hot line. A tight mark on the floor means a smaller hole and less flooring to replace.
Repair options compared
| Method | What happens | Fits best when |
|---|---|---|
| Spot repair | Cut a small opening in the slab, fix the pipe, refill with concrete | One leak on pipe that is otherwise sound |
| Reroute | Abandon the buried section and run new pipe through walls or attic | The pipe is under finished flooring you want to keep |
| Repipe | Replace the supply piping throughout | The same pipe has leaked before |
What sets the price
Cost depends on how long locating takes, what covers the slab, which repair method fits, and how much drying is needed afterward. Rebuilding flooring is usually billed by a separate contractor. Plumbing permits in Winston-Salem and unincorporated Forsyth County come from the joint City-County Inspections Division, and the plumber typically pulls any that apply.
Slab Leak Repair questions from Winston-Salem homeowners
Can a slab leak be fixed without breaking the floor?
How can I tell a slab leak from a leak in the yard?
Is a slab leak an emergency?
Does homeowners insurance cover slab leaks?
Related plumbing services in Winston-Salem
Helpful guides
Slab Leak Repair in nearby cities and towns
Forsyth County
Davie County
Davidson County
Rowan County
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