01
What Is a Slab Leak and What Causes It?
concrete slab foundationcopper pipe corrosionsoil shifting
A slab leak is a water or sewer line failure that occurs inside or directly beneath a concrete slab foundation.
In Clovis, NM, the three most common causes are copper pipe corrosion, soil shifting under the slab, and high water pressure running consistently above 80 PSI. The region's clay-heavy soil expands and contracts with seasonal moisture changes, stressing pipes from the outside. Simultaneously, Clovis's notoriously hard groundwater accelerates internal corrosion, especially in homes built before 1990 with original copper plumbing. A pinhole in a pressurized line can leak 200 to 300 gallons a day before any visible surface sign appears.
02
What Slab Leak Warning Signs Should You Watch For?
hot spots on floormold growthwater bill spike
The earliest and most reliable warning signs of a slab leak are a sudden water bill spike with no change in usage, hot spots on floor surfaces — particularly noticeable on tile — and the sound of running water when every fixture in the house is off. Mold growth along baseboards or a persistent mildew odor near the floor often follows within weeks if the leak goes undetected. Clovis military families rotating through base housing should be especially attentive: a previous tenant's slow leak may have already softened the subfloor before you moved in. Don't wait for visible pooling — by then, damage is significant.
03
Can You Fix a Slab Leak Without Breaking the Floor?
trenchless repairpipe re-routingepoxy pipe lining
Yes — trenchless repair methods let a plumber fix many slab leaks without jackhammering the floor at all.
The two most common options are pipe re-routing, where entirely new lines are run through wall cavities or the attic space to bypass the damaged section, and epoxy pipe lining, where a flexible epoxy lining is inserted into the existing pipe and cured in place, sealing the leak from the inside. Epoxy lining works well on straight runs of corroded copper that haven't fully collapsed. Re-routing is better when multiple sections are compromised. Both methods avoid the dust, noise, and restoration cost of concrete demolition and typically add only 10 to 15 percent to material costs.
04
How Much Does Slab Leak Repair Cost in Clovis?
flat-rate quotepermit costre-piping
Reputable slab leak repair companies in Clovis, NM typically quote electronic detection separately at $150 to $350, then provide a flat-rate quote for the chosen repair method.
A targeted spot repair — opening the concrete at one precise location — generally runs $1,000 to $2,500 including concrete patching. If the copper piping throughout the home is corroded, full re-piping jumps to $4,000 to $8,000 depending on square footage. Permit cost in Curry County usually adds $75 to $150 to the total. Always ask for an itemized estimate: labor, materials, permit, and concrete restoration should each appear as separate line items before you approve anything.
05
How Do You Repair a Leak in a Concrete Slab?
slab penetrationpipe reroutingconcrete patching
To repair a water pipe leak in concrete slab foundations, a plumber first confirms the exact leak location using acoustic or tracer-gas detection, then chooses the access strategy.
For a traditional repair, a slab penetration is made with a concrete saw or jackhammer — kept as small as possible, typically 12 to 24 inches square — to expose the pipe. The damaged section is cut out, replaced, and pressure-tested. Pipe rerouting avoids the slab entirely by threading new supply lines through interior walls. After any direct slab work, concrete patching restores the surface, though full cure takes 24 to 48 hours. Either way, a final pressure test at 100 PSI confirms the repair before closing the job.
06
Does Foundation Damage From a Slab Leak Need Separate Repair?
foundation crackstructural repairslab settling
When water saturates soil beneath a foundation for months, it can cause slab settling, a foundation crack, or differential movement that shifts door frames and wall lines — and those structural issues require a separate contractor to fix slab foundation problems after the plumber finishes. Not every slab leak causes structural damage; many are caught early enough that only the pipe needs attention. But if you notice new cracks running diagonally from door corners, doors that suddenly stick, or visible gaps where walls meet the ceiling, commission a structural engineer's assessment alongside the plumbing repair. Structural repair costs in Clovis range from $1,500 for minor crack injection to $10,000 or more for pier underpinning.