Slab Leak Detection & Repair in Friendswood, TX
Expansive Gulf Coast clay shifts pipes under your foundation. Our electronic locators and pressure testing pinpoint the leak before we break a single tile.
A slab leak is one of the most stressful plumbing problems a Friendswood homeowner can face. Water is coming from somewhere under your foundation, your bill just doubled, and you're worried about jackhammering half the house. We do this every week — and in the overwhelming majority of Friendswood slab leaks, we can locate the exact leak within a few inches, then repair it with minimal floor disruption, or bypass the failed line entirely with a re-route through the attic.
Our expansive gumbo clay soil moves aggressively between summer drought and Gulf Coast rain events. That movement puts constant flex-stress on copper hot lines under the slab — the reason so many homes in Friendswood, Pearland, and Alvin experience their first slab leak between years 22 and 35. We use electronic acoustic leak detectors, tracer gas, and thermal imaging to find leaks precisely, not by pattern-guessing.
Signs you have a slab leak
- Unexplained jump in your water bill
- Sound of running water when nothing is on
- Warm or hot spot on the floor tile or laminate
- Damp carpet in a specific area with no obvious source
- Mildew smell inside a cabinet or closet on a slab
- Cracks appearing in interior walls or floor tile
- Water pressure that drops without a plumbing change
- Water heater running constantly even when nobody's using hot water
Our Process
The same steps on every job — from a $189 drain clear to a $9,000 whole-house repipe.
- 1
Isolate
Pressure-isolate hot vs. cold supply, verify the leak is under the slab (not a fixture or drain), and rule out irrigation.
- 2
Locate
Electronic acoustic locator, tracer gas, and thermal camera pinpoint the leak inside a small area — often within 12 inches.
- 3
Options
Three honest options, in writing: (1) spot repair through the slab, (2) re-route the line overhead through the attic, or (3) full repipe if multiple sections are failing.
- 4
Repair
Where a jackhammer is needed, we use a small pneumatic breaker, protect surrounding flooring, and repair with a permanent copper or PEX solution.
- 5
Test & Restore
Pressure hold test for 30+ minutes, concrete patch, and coordination with a flooring contractor if surface finish restoration is needed.
Your Slab Leak Repair Appointment, Step by Step
Before we arrive
A licensed dispatcher confirms your address, describes what our tech will do first, and gives you a firm arrival window. For emergencies inside 77546 we hold a 45-minute promise; scheduled slab leak repair visits get a 2-hour window.
On the truck
Your assigned Master Plumber arrives in a branded vehicle stocked with common slab leak repair parts — Delta, Moen, Kohler, Rheem, Bradford White, Uponor PEX-A — so most jobs finish in one visit without a supply-house trip.
Before work starts
You get a written flat-rate price in your hand covering labor, materials, permits (when required by the City of Friendswood), warranty terms, and cleanup responsibility. You approve in writing before we lift a wrench.
What We Service
What Affects Your Price
We don't publish fake prices to trick you into calling. We do publish the honest factors that drive real cost — so when we hand you a written quote, you know why.
Location method
Electronic locate + tracer gas is a fixed $349–$449. Some plumbers charge nothing then jackhammer the wrong spot — we invest in the right diagnosis.
Repair method
Spot repair through slab is fastest and cheapest. Overhead re-route through attic avoids tile damage but adds pipe run. We price both.
Access
Slab leak under a tile foyer costs less to repair than one under a granite kitchen island. We're honest about that up front.
Full repipe
When we find two or more slab leaks, a full PEX repipe through the attic is often the smartest lifetime investment. We'll model it against ongoing spot repairs.
Why This Matters in Friendswood, TX
Friendswood sits on the same expansive clay belt as Pearland, Alvin, and Missouri City — soils with a very high plasticity index (PI 30–50+). Between the parched dry cycle of a Texas August and a 6-inch October rain, those soils swell and shrink significantly, torquing every copper line under your slab. That's why homes built in the 1970s and 1980s across Autumn Creek, Wedgewood, and older Pearland neighborhoods often see their first slab leak around year 25–35, and a second one shortly after. If you've had one slab leak already, we'll usually recommend running the numbers on a whole-house re-route instead of chasing leak after leak.
Why Friendswood Homeowners Trust Us for Slab Leak Repair
Friendswood Plumbing Co. has been serving Friendswood and Greater Houston for 22 years — 487+ verified reviews at a 4.9-star average, Texas Master Plumber License #M-40217, and a 45-minute response inside Friendswood 77546/77549. Every slab leak repair job we do carries a written 2-year workmanship warranty and a firm flat-rate price handed to you before we start.
Master Plumber on every slab leak repair job
Slab Leak Detection & Repair is diagnosed and performed by a licensed Texas Master Plumber — never a sub, never a trainee working unsupervised.
Flat-rate written price before we start
You see the full slab leak repair price in writing — labor, parts, permits, cleanup — before any work begins. No hourly meter running, no surprise upcharges.
Trucks stocked for slab leak repair
Copper hot & cold line slab leaks, Pinhole leaks from soil chemistry, and the common failure points — stocked on our trucks so most slab leak repair jobs finish in one visit.
2-year workmanship warranty
Every slab leak repair repair carries a 2-year written workmanship warranty, honored by the same crew. Manufacturer warranties pass through on parts.
Related Services
Repiping Services
End the string of pinhole leaks.
General Plumbing Repair
From a dripping faucet to a slow shower drain, our Texas Master Plumbers arrive on time with the parts to solve it today.
24/7 Emergency Plumber
Real Master Plumbers on call — nights, weekends, holidays, hurricane season.
Related Articles
Why Friendswood Expansive Clay Soil Causes So Many Slab Leaks
The soil under your Friendswood home moves up to 6 inches between wet and dry seasons. That is why 1970s slab homes here experience their first slab leak by year 25.
How Much Does Slab Leak Repair Cost in Friendswood, TX?
Slab leak repair in Friendswood ranges from $1,500 for a simple spot repair to $9,200 for a full PEX repipe. Here is exactly how the pricing breaks down.
Signs Your 1970s Pearland or Friendswood Home Needs Repiping
Homes built in Friendswood and Pearland between 1968 and 1985 are now at the top of their copper supply life. Here is when to repipe.
Repiping Cost in Friendswood, TX: PEX-A vs Copper 2026 Guide
Honest 2026 Friendswood repiping prices for PEX-A vs copper, plus why 40-year-old copper is failing across Sunmeadow, Wilderness Trails & older Pearland.
PEX-A vs Copper Repipe for Friendswood Homes: Honest Comparison
The honest PEX-A vs copper decision for 1970s Friendswood homes. Cost, hard-water performance, lifespan, installation.
Slab Leak Repair Across Friendswood & Greater Houston
Our slab leak repair crews dispatch daily from our Hunters Lane hub in Friendswood — 45-minute response inside Friendswood 77546/77549. We serve the entire Tier 1 corridor along FM 518 and FM 528: Friendswood 77546 and 77549, Pearland, Alvin, Manvel, Webster, and Brookside Village. Extended service reaches Galveston County, south Harris County, north Brazoria County, and Fort Bend County — 39+ cities in total. Every job runs by the same Texas Master Plumber, at the same flat-rate pricing, with the same 2-year written warranty.
Ready for Slab Leak Repair in Friendswood?
Every slab leak repair job we do is priced flat-rate in writing before we start, performed by a Texas Master Plumber (never a sub), and backed by a written 2-year workmanship warranty. If you have an active emergency, skip the form and call — a licensed dispatcher answers on the first ring, 24/7.
Frequently Asked
How much does slab leak repair cost in Friendswood?
Electronic detection is $349–$449. A spot repair through the slab typically runs $1,500–$3,200 all-in. A full copper re-route through the attic runs $4,500–$8,500 depending on the size of the home.
Will homeowners insurance cover a slab leak?
Most Texas policies cover the resulting water damage and the cost to open and close the slab — but not the pipe repair itself. We supply written documentation for your claim.
Can you find a slab leak without tearing up my floor?
Yes. Electronic acoustic locators, tracer gas, and thermal imaging pinpoint most leaks within a foot or two — no exploratory demolition.
Is a slab leak an emergency?
If water is actively saturating the slab, yes — call now. If pressure is holding and you can shut water off between uses, you have time to plan the repair properly.
Should I re-route the line instead of breaking my slab?
Often yes, especially in single-story Friendswood homes with attic access. Re-routing avoids floor damage and gives you a brand-new PEX line rated for 50+ years.
45-minute response inside Friendswood 77546/77549
Think You Have a Slab Leak?
Precise electronic detection, honest options, no wasted jackhammering. Call (831) 290-4327.