Slab Leak Detection and Repair in Fort Lauderdale, FL
A slab leak is a break in a pipe that runs in or beneath the concrete floor. In Fort Lauderdale, where most homes are built on slabs, it is among the most common reasons for a sudden jump in the water bill.
Water coming up through the floor?
Close the main valve first, then call. Tell the dispatcher which rooms feel warm or damp.
(754) 320-541224/7 emergency lineSigns the leak is under your floor
Slab leaks rarely show a puddle at first. The water travels through sand and concrete before it surfaces, so early signs are subtle. Several of the signs below together point strongly to a break under the floor.
Common signs of a slab leak
- A warm patch on a tile or wood floor, which suggests a hot water line.
- The sound of water running when every fixture is off.
- The water meter moving with the whole house shut down.
- Damp carpet, lifted flooring or cracked grout along one line.
- Water appearing at the slab edge near the garage or an outside wall.
- A musty smell that returns after cleaning.
Start with the meter test on the leak detection page. If the meter keeps moving after the house valve is closed, the leak sits between the meter and the house. If it stops, the break is inside, and a floor-level leak is likely.
Why slab leaks are common here
Broward County homes are built on slabs because groundwater sits close to the surface. Supply lines in many houses were run in or under the concrete during construction. Copper there can develop pinholes from the inside as water chemistry wears the wall thin. Hot lines expand and contract each day, and movement at a joint can turn a weak spot into a leak.
The city's water comes from more than one treatment plant. Fiveash softens by lime, and Peele-Dixie uses nanofiltration, so the mineral content a pipe sees can differ by address. Ask the plumber what the failed section looks like. That helps decide whether one repair is enough or the line is wearing out as a whole.
How the leak is located
- Confirm it is the slabA pressure test isolates the hot and cold lines to show which one loses pressure.
- Listen and scanAcoustic equipment hears the leak through the floor, and thermal imaging can trace a warm hot line.
- Mark the spotThe technician marks the floor so any opening is small. Ask if marking is part of the visit.
- Choose the repairThe contractor explains whether to break the slab, reroute the line or replace more pipe.
Call and say how long it has been happening. The dispatcher will line up detection.
Three ways to repair a slab leak
| Option | What happens | Best when | Trade-off |
|---|---|---|---|
| Spot repair through the slab | A small section of concrete is opened and the pipe is fixed | One leak in a healthy line | Flooring above is cut and patched |
| Reroute through the attic or walls | A new line bypasses the failing section | The slab line has failed more than once | Drywall access holes are needed |
| Partial or full repipe | Supply lines are replaced with new pipe | Several leaks or an old, failing material | Higher upfront cost, fewer future calls |
Rerouting is popular in houses with accessible attics, because the new pipe stays out of the concrete. Fort Lauderdale requires a plumbing permit to reroute plumbing lines, and the licensed contractor pulls it. Exterior work can also need homeowner association review, so tell your HOA early.
If the same line leaks twice, compare the quote for another spot repair with the quote for a repipe. A burst of leaks in one year often signals that the whole run is near the end of its life.
When the leak is between the house and the street
Many callers say a leak runs under the slab, then discover it is in the line outside. The two cases need different work, so sorting them out first saves money.
Hot line or cold line under the floor
A warm spot on tile points to a hot line, often from the water heater into the house. A cold, damp patch points to a cold line. A hissing sound near a wall with no visible water suggests a pressurized pipe in the slab. Tell the dispatcher which of these you notice.
Why a previous search may have failed
Concrete muffles sound and spreads water along the base. A leak can show up in a room far from the pipe that failed. If an earlier visit did not find the source, ask the next one to name the method and to test the lines in sections.
Condos, townhouses and rentals
Shared slabs bring extra steps. In a condo or townhouse the association may control access to the floor, the neighboring unit and the shared risers. In a rental, the owner or manager normally approves repairs. Tell the dispatcher your ownership situation on the first call so approvals do not delay the job.
What changes the cost of a slab leak repair
- Leak location
- A break near an open wall is easier than one under the center of a tiled room.
- Floor covering
- Tile, wood, carpet and stone are removed and replaced in different ways.
- Repair method
- Spot repair, reroute and repipe differ widely in labor and materials.
- Permit and inspection
- A reroute needs a city permit, and some jobs need an inspection.
- Finish work
- Patching concrete, drywall and flooring is often a separate scope from the plumbing.
Get a written scope that names who patches the floor. Insurance policies differ on slab leak coverage, so ask your insurer before work starts.
After the leak is fixed, flooring and subfloor may still be wet. If water spread widely, ask about water damage restoration. That service runs on its own line and is separate from the plumbing repair.
Questions people ask before they call
You may hear water running when all fixtures are off, or feel a warm patch on the floor. Some leaks show only as a higher water bill or a damp baseboard.
Often yes. Rerouting the line through the attic or walls avoids opening the slab, though drywall gets patched. The best method depends on the layout and the pipe condition.
It can be. Water under the foundation keeps spreading, and it raises the bill every hour. Close the main valve if the floor is wet and call for detection.
Duration depends on the method and access, so ask the contractor for a schedule. Spot repairs and reroutes differ a lot, and the finish work adds time.
A reroute of plumbing lines needs a plumbing permit in Fort Lauderdale, and the contractor submits it. Check your city if you live elsewhere in Broward County.
Not always. One leak in a healthy line can be spot repaired. Repeated leaks or a known failing material make a repipe worth pricing.
Yes. The service line runs from the meter to the house, and part of it can pass under the slab. A meter test helps tell inside leaks from outside leaks.
That often means a hot water line is leaking below. Turn the water heater off if the warmth is strong, and call so the line can be tested.
Tile and finished floors add work, because they must be opened and restored. Ask for the cost of access and restoration as separate lines.
You do, with the contractor's advice. Ask for both options in writing, with the reasons for each.
Leak under the slab?
Call and describe the warm spot, the sound or the meter reading. The dispatcher will explain how detection and repair work.