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Slab Leak Water Damage in Richardson, TX
A slab leak is a broken water line under your concrete foundation, usually caused by clay soil shifting under older Richardson slab homes. A licensed plumber finds and fixes the pipe. For the water damage it leaves in your floors and walls, call (972) 947-2040 to get drying and cleanup started.
Warning signs
Signs you have a slab leak
- A warm spot on a tile or wood floor, often from a hot water line
- The sound of running water when every fixture is off
- A water meter that keeps moving when no water is being used
- A water bill that jumps for no reason
- Damp carpet, mildew smell or cupping floorboards away from any sink or tub
- Low water pressure, or a water heater that seems to run all the time
- New cracks in floor tile or along the baseboards
Check it yourself: the 15-minute meter test
Shut off every faucet, appliance and sprinkler zone. Note the meter reading or watch the small leak indicator, then wait 15 minutes without using water. If it moved, water is going somewhere, and under the slab is a common place in older Richardson homes.
Local causes
Why slab leaks are so common in Richardson
Two things meet under Richardson houses: expansive clay soil and aging pipe.
- Clay that swells and shrinks. North Texas clay expands when it’s wet and shrinks hard in a drought. The slab moves with it, a little at a time, and the pipes buried underneath take the stress.
- Older slab-on-grade homes. Richardson grew fast after Texas Instruments opened its offices on the city’s southern border in 1956. Many homes from the 1950s to early 1970s were built slab-on-grade, with copper or galvanized supply lines and cast-iron drains under or through the foundation.
- Hard to see, slow to show. A leak under concrete can run for weeks before it shows up at the surface, which is why slab leak damage is often bigger than it first looks.
First steps
Leak found? The first 48 hours
- Shut off the water. Close the main valve. If the warm spot points to a hot line, turn off the water heater’s supply too.
- Book a licensed plumber for the pipe. Leak detection and pipe repair are plumbing work.
- Document it. Photograph wet floors, swollen baseboards and the meter reading, then report the claim to your insurer.
- Get the water damage handled. Call (972) 947-2040 for moisture mapping, removing what can’t be saved, and drying the slab and walls.
- Hold off on new flooring. Wait until moisture readings show the slab is dry, or the new floor can cup or grow mold.
The repair
How the leak repair affects your floors
Finding and fixing the pipe is a plumber’s job, using pressure testing and electronic leak detection. The repair method they choose decides how much of your house gets opened up, and that shapes the water damage work afterward.
| Repair method | What it means for your floors and walls |
|---|---|
| Direct spot repair | A section of floor is broken out at the leak. The slab and the flooring around it need drying before the patch and new flooring go down. |
| Tunneling | Interior floors stay intact. The wet floors and walls inside still need drying, but there is less to rebuild. |
| Reroute or repipe | New pipe runs through walls or the attic, so expect drywall openings to patch. The wet slab and floors still need drying. |
Ask the plumber which method they’ll use and get it in writing, so the dry-out and any tear-out can be planned around it.
The dry-out
Drying the house after a slab leak
Once the leak is fixed, the water it pushed into your floors and walls has to come out.
- Tile on slab can often stay while the slab dries underneath.
- Carpet pad is usually replaced; the carpet can sometimes be dried and relaid.
- Floating LVP and laminate almost always come up, because water trapped under them can’t dry.
- Hardwood glued or nailed to the slab can sometimes be saved with floor drying mats if it’s caught early.
- Walls and baseboards wick water up from the floor; swollen baseboards and the bottom of wet drywall usually come out.
Concrete holds water longer than wood or drywall, so a slab leak dry-out often runs past the usual 3 to 5 days. Ask for daily moisture readings and a drying log.
Insurance and cost
What insurance covers, and what it costs
Coverage depends on your policy and how the leak happened. In general:
- The resulting water damage is often covered when the leak is sudden and accidental.
- Many policies don’t pay to repair the leaking pipe itself.
- Some pay to break out and restore the slab or floor to reach the pipe; check before demolition starts.
- Damage from a leak that ran a long time, or from wear and tear, is often excluded, and so is mold that grew because of it. If mold is already growing, see mold remediation in Richardson.
One North Texas plumbing company puts slab leak detection and repair at up to about $5,000; the dry-out is a separate bill. For drying and tear-out ranges across DFW, see our water damage restoration cost guide, and for the claim itself, our insurance claim guide.
Service area
Slab leak help across Richardson
We serve every Richardson ZIP code: 75080, 75081 and 75082, on both the Dallas County and Collin County sides of the city. Neighborhoods like Richardson Heights and Canyon Creek are full of mid-century homes from the era described above.
Pipe broke above the floor instead? See burst pipe repair.
Related help: structural drying after a slab leak, hardwood floor water damage and water removal and extraction. Water only after rain? It may be yard drainage, not a slab leak. See all water damage services in Richardson.
Related guides: does insurance cover slab leaks? · signs of hidden water damage.
FAQ
Slab leak FAQs
How do I know if I have a slab leak?
The common signs are a warm spot on the floor, the sound of running water with everything off, a water meter that keeps moving when no water is in use, a sudden jump in your water bill, and damp carpet or cupping floors away from any sink or tub. A plumber confirms it with pressure testing and electronic leak detection.
Why are slab leaks so common in Richardson?
North Texas clay swells when it gets wet and shrinks hard in drought, so slab foundations move a little all the time. Many Richardson homes were built slab-on-grade in the 1950s to early 1970s with supply lines under the concrete, and decades of that movement stress the pipes until one fails.
Does homeowners insurance cover a slab leak?
It depends on the policy and how the leak happened. The water damage is often covered when the leak is sudden and accidental, but many policies don’t pay to repair the leaking pipe itself. Some cover the cost of breaking out and restoring the slab or floor to reach it. Check your policy, or ask your agent, before demolition starts.
Can a floor be dried after a slab leak, or does it have to come out?
Tile over a slab can often stay. Carpet pad is usually replaced. Floating LVP and laminate almost always come up, because water trapped underneath can’t dry. Glued or nailed hardwood can sometimes be saved with floor drying mats if it’s caught early. Concrete itself takes longer to dry than wood or drywall, so expect daily moisture readings.
Who fixes a slab leak: a plumber or a restoration company?
Both, in that order. A plumber finds and repairs the leak, by opening the slab at the leak, tunneling under it, or rerouting the line through walls or the attic. A restoration company then removes the water and dries the slab, walls and flooring. Drying before the leak is fixed is wasted money.
My plumber fixed the slab leak. Do I still need water damage restoration?
Usually, if water reached your floors or walls. Fixing the pipe stops new water, but the slab, flooring and bottoms of the walls stay wet. Flooring left on a wet slab can cup, buckle or grow mold, so get moisture readings before deciding.
How long does a slab take to dry after a leak?
Longer than most water losses. Concrete holds water longer than wood or drywall, so a slab leak dry-out often runs past the usual 3 to 5 days. Ask for daily moisture readings and confirmation the slab is dry before new flooring goes in.
Sources for this page
Last updated October 30, 2026.
Think you have a slab leak?
Do the meter test, then call. You’ll get help drying what the leak already soaked, and a straight answer on next steps.