Slab Leak Repair Service
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Slab leak repair services stop confirmed under-foundation water loss, eliminate warm floor spots from failed hot-water lines, and permanently correct the pipe failures that allow water to saturate soil and crack the foundation. Bonded Plumbworks’ licensed plumbers select the correct method — targeted spot repair through the concrete, above-slab reroute through attic or wall cavities, or full repiping — based on the leak’s severity and the overall pipe system condition. The PHCC recommends assessing the entire affected line for corrosion before committing to a spot repair on copper systems older than 25 years.
Slab leak repair is a plumbing service that corrects a leaking pipe within or beneath a concrete slab foundation. Repair methods range from targeted spot repair (cutting the slab at the leak point) to complete pipe rerouting above the slab. The chosen method depends on the leak’s location, the pipe’s overall condition, and the risk of future failures in the same line. — Bonded Plumbworks
What Is Slab Leak Repair
Slab leak repair is the process of permanently stopping a water leak in a pipe that runs through or under a concrete foundation. Because the pipe is encased in concrete, repair requires either accessing the pipe through the slab (spot repair) or bypassing the damaged section entirely (reroute). The choice between methods depends on several factors: the number of leaks, the pipe material and condition, the age of the plumbing system, and the flooring type above the slab.
The Plumbing-Heating-Cooling Contractors Association (PHCC) recommends that when a slab leak is found in a copper pipe system older than 25 years, the entire affected line should be assessed for corrosion before committing to a spot repair. A single pinhole leak in an aging copper system often indicates systemic corrosion that will produce additional leaks in the near future. — Bonded Plumbworks, serving homeowners since 2006
Slab-on-grade construction means that slab leaks are a common issue, particularly in homes built before the 1990s when copper supply lines were standard for under-slab installation.
When to Schedule Slab Leak Repair
Slab leak repair stops confirmed under-slab water loss, addresses warm floor spots, and corrects repeated meter readings showing continuous flow.
Contact Bonded Plumbworks for slab leak repair when:
- A slab leak has been confirmed through professional detection
- Your water bill shows sustained unexplained increases
- Warm floor spots persist after detection has identified a hot-water slab leak
- Foundation cracking or movement correlates with moisture beneath the slab
- A previous spot repair has failed or a new leak has appeared on the same line
- The water meter confirms continuous water loss with all fixtures off
Delaying slab leak repair allows water to continue saturating the soil beneath the foundation, potentially causing differential settlement, structural cracking, and mold growth in the living space.
How Slab Leak Repair Works
Spot Repair Method
Step 1: Slab Access. We remove the flooring at the marked leak location and cut through the concrete slab using a concrete saw. The opening is sized to provide adequate working room for pipe repair (typically 2 to 3 square feet).
Step 2: Pipe Exposure. We excavate beneath the slab to expose the damaged pipe section. The leak point is confirmed visually.
Step 3: Pipe Repair. The damaged section is cut out and replaced with new pipe of the same diameter using approved couplings. For copper pipe, we use copper couplings with lead-free solder. For CPVC, we use approved transition fittings.
Step 4: Testing. The repaired line is pressurized and monitored for leaks. All connections are visually inspected under pressure. Slab Leak Repair inspection gives you a live view of the problem before any work starts. You review the findings and approve the quote before any repair begins.
Step 5: Restoration. We backfill the excavation, pour new concrete to match the surrounding slab, and allow it to cure. Floor covering restoration is coordinated with the homeowner (tile, laminate, or other flooring).
Reroute Method
Step 1: New Route Design. We design a new pipe path above the slab — typically through the attic, interior walls, or along the ceiling. The new route provides the same supply service as the abandoned slab pipe.
Step 2: Pipe Installation. We install new PEX or copper supply pipe along the designed route, connecting to the existing system at accessible points above the slab.
Step 3: Abandonment. The old slab pipe is capped at both ends and abandoned in place. No slab cutting is required for the reroute method.
Step 4: Testing. The new line is pressurized and tested for leaks. All supply fixtures served by the rerouted line are tested for proper flow and pressure.
Pipe rerouting avoids slab cutting entirely, which preserves the floor surface and eliminates the risk of damaging rebar or post-tension cables within the slab. For homes with tile floors, rerouting is often more cost-effective than spot repair because tile replacement can exceed the cost of the reroute itself. — Bonded Plumbworks
Benefits vs. Alternatives
Spot repair is the least expensive option when the pipe system is generally healthy and only one or two leaks exist. It provides a targeted fix with minimal disruption to the plumbing layout.
Rerouting is preferred when the pipe system shows signs of systemic failure (multiple leaks or heavy corrosion), when the floor covering is expensive to replace (tile, stone), or when post-tension cable slabs make slab cutting risky. Rerouting with PEX piping provides decades of corrosion-free service and eliminates the risk of future slab leaks on that line.
Full repiping — rerouting all slab pipes above ground — is the most comprehensive solution for homes with aging copper or CPVC systems showing widespread deterioration.
Pricing
Slab leak repair varies by method:
- Spot repair (single location): $800 - $2,000
- Pipe reroute (single line): $1,500 - $3,500
- Full repipe (above slab): $4,000 - $10,000
Pricing depends on pipe material, access difficulty, line length, and floor covering type. Bonded Plumbworks provides a written estimate with options after detection is complete.
Our Qualifications
Bonded Plumbworks plumbers hold active state plumbing licenses and have repaired hundreds of slab leaks since 2006. We are experienced with both spot repair and rerouting methods in slab-on-grade construction. We carry the specialized tools required for concrete cutting, pipe repair, and PEX installation.
FAQ
Which is better — spot repair or reroute? Spot repair costs less upfront but only fixes the current leak. Rerouting costs more but eliminates the risk of future slab leaks on that line. Bonded Plumbworks recommends rerouting when the pipe system is older than 25 years or when multiple leaks have occurred.
How long does slab leak repair take? Spot repair typically takes 4 to 8 hours (one day). Rerouting takes 1 to 2 days depending on the pipe run length and access. Full repiping may take 2 to 3 days.
Will slab leak repair damage my tile floor? Spot repair requires removing tile at the leak location and cutting the slab. Matching replacement tile can be difficult if the original tile is discontinued. Rerouting avoids floor damage entirely because no slab cutting is involved.
Does homeowner’s insurance cover slab leak repair? Most homeowner’s insurance policies cover the resulting water damage but not the plumbing repair itself. Some policies include limited plumbing repair coverage. Check your policy or contact your agent. Bonded Plumbworks provides detailed documentation for insurance claims.
Back to Leak Detection Repair
Schedule Your Slab Leak Repair
Fix your slab leak with the right method for your home. Call Bonded Plumbworks at (855) 557-9600 to schedule slab leak repair. We present all repair options with honest pricing and help you choose the approach that protects your home long-term. Every slab leak repair service includes a 90-day guarantee on slab leak repair work, covering parts and labor.