- BBB A+ Rated
- Mesquite Chamber of Commerce Member
- 30+ Years Experience
Slab Leak Detection and Repair in Mesquite, TX
James Armstrong Plumbing finds and fixes slab leaks in Mesquite, TX before they damage your foundation. Master Plumber James Armstrong (Texas License M-39428) locates the leak under your concrete first, using electronic and acoustic equipment, then opens only the small spot directly over it. No guessing, no jackhammering the whole floor to search. Dispatched from our shop at 844 Dalworth Dr, with most calls reached the same day.
Same-day service on calls before noon. Detection runs $300 to $500 and you get a flat written quote before any concrete is opened.
Licensed Master Plumber
License #M39428
The “Armstrong Clean Promise".
We leave your home cleaner than we found it, or we pay for the cleaning. No mess, no stress — that's our guarantee.
Get My Free Quote
Once you submit, we may reach out to you via phone, email, or text to fetch information, which you can opt out of at any time. We will never share your personal information with third parties for marketing purposes. Consent is not a condition of purchase. Message/data rates apply.
Special Offers
Save BIG With James Armstrong Plumbing
Most Mesquite slab leaks trace to one of two causes: clay soil shifting the copper under your foundation, or hard water eating a pinhole through it. Detection tells us which, and that determines whether you need a spot repair or a reroute. We quote both when both are real options.
$100Off
$500Off
Mention your coupon when you call or we’ll apply it automatically from your quote request.
Our Services
Comprehensive Plumbing Solutions for Homes & Businesses
Most Requested 
Pipe Leak Repair & Re-piping
When one slab leak becomes a pattern, we reroute or repipe the failing line so you stop chasing the same leak twice.
Plumbing Repairs & Installation
Fast help for leaks, fixtures, and upgrades. We restore your plumbing with clean, reliable work.
Most Requested 
Sewer Line Repair & Replacement
Under-slab drain lines fail too. We inspect on camera and repair or replace the run as needed.
Sump Pump Services
Keep water out of the lowest part of the home so leaks and storms do not turn into standing water.
Emergency Plumbing
Active slab leak soaking the foundation? We answer 24/7 and stop the water fast.
Emergency Service
Emergency Service — Available 24/7
Available 24/7. Active slab leak? Do not wait. Our emergency team serves Mesquite and the entire DFW area around the clock. [ Call 214-918-6109 ] • Technician available now
Technician available now
Proudly partnered with leading brands
Meet James Armstrong
Meet the Master Plumber Serving DFW: James Armstrong
James Armstrong has been a Mesquite Master Plumber since 1995. What started as helping neighbors with leaky faucets turned into a career, and eventually a family business, built on one simple rule: treat people right, do the job with integrity, and stand behind your work. Today James and his crew serve Mesquite, Garland, Rowlett, Dallas, Balch Springs, and the broader east DFW metro, with most calls reached within 25 minutes of the Mesquite headquarters at 844 Dalworth Dr.
“Slab leaks scare people, and I get why. Water under the foundation feels like a disaster. But in thirty years here I have learned the worst thing you can do is start breaking concrete to look for it. We locate the leak first with listening equipment, mark the one spot it is actually at, and open only that. Nine times out of ten in Mesquite it traces back to our clay soil shifting the copper or hard water eating a pinhole in it. Find it right, fix it once, and most homeowners never think about it again.”
James Armstrong, Master Plumber • Texas License M-39428 • Founder, James Armstrong Plumbing
Every job comes with the Armstrong Clean Promise. We leave your home cleaner than we found it, guaranteed. No excuses, no mess, no shortcuts. It is the kind of commitment that has earned us thousands of repeat customers and a reputation across the DFW metroplex for honest, reliable work.
Why Choose Us
Why Mesquite Homeowners Choose James Armstrong
Licensed & Certified Technicians
Master Plumber led and fully licensed. Quality work that meets current Texas plumbing code.
Transparent, Upfront Pricing
A flat written quote before we open any concrete. No hidden fees, no surprises.
We Locate Before We Cut
Electronic and acoustic detection pinpoints the leak so we open one small spot, not your whole floor.
Minimal Floor Disruption
Targeted repair protects your flooring, your slab, and your restoration budget.
The Armstrong Clean Promise
We leave your home cleaner than we found it, or we cover the cleaning.
Emergency Response Available
Active leaks handled 24/7. Most calls reached the same day.
Emergency Calls Accepted After Hours & Weekends as well.
Slab leak emergency? We take after-hours and weekend calls at 214-918-6109. A $199 emergency dispatch fee applies, and most calls are responded to the same day. An active leak under the slab soaks the foundation fast, so we prioritize locating and shutting off the water before damage spreads.
Our Process
What to Expect When You Call
Call or Book Online
Speak with a real person, not a call center. We schedule at your convenience.
Same-Day Inspection
A licensed plumber evaluates your issue on-site. No guesswork.
Upfront Quote
You approve the price before work begins. The number you see is final.
Clean, Expert Work
Armstrong Clean Promise — we leave your home better than we found it.
Follow-Up Guarantee
We check in within 24 hours and follow up to ensure everything holds.
Free estimate · No obligation · Real person answers
Service Areas
Serving Communities Across Dallas-Fort Worth
- Allen
- Anna
- Arlington
- Azle
- Balch Springs
- Bedford
- Benbrook
- Blue Mound
- Blue Ridge
- Burleson
- Celina
- Colleyville
- Combine
- Dallas
- Everman
- Fairview
- Farmersville
- Flower Mound
- Forest Hill
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Plano
- Richardson
- Rowlett
- Sunnyvale
Latest Tips
From Our Blog
How a Plumber for Slab Leak Helps Detect the Issue
Kitchen Plumbing Problems Homeowners Often Ignore
Plumbing Maintenance Checklist for Each Season
Emergency Plumbing: 5 Urgent Signs Your Plumbing System Needs Immediate Professional Help
Why Homeowners Choose CIPP for Long-Lasting Sewer Line Repair
How to Choose a Trusted Plumber for Common Home Plumbing Problems
FAQ
Frequently Asked Questions
Have questions? We’ve got answers. Can’t find what you’re looking for? Give us a call anytime.
- The most common signs are a warm spot on the floor, a water bill that jumps with no change in use, the sound of running water when everything is off, cracked or warped flooring, and a hot water heater that runs constantly. If you notice any of these, call 214-918-6109 for a detection visit before the foundation takes on more water.
We locate the leak first, then open only the small area directly over it. Electronic listening equipment, acoustic sensors, and pressure testing pinpoint the failed section under the slab, so we are not guessing or breaking concrete to search. That is the difference between a targeted repair and a torn-up floor.
Cost depends on how deep the line sits, where the leak is, and whether a spot repair or a reroute makes more sense. We give a flat written quote after detection, before any concrete is opened. A single spot repair costs far less than a repipe, which is why accurate detection up front protects your budget.
Mesquite sits on expansive North Texas clay that swells in wet months and shrinks in dry summers. That constant movement stresses the copper and pipe joints running through the slab until they crack or rub through. Hard water adds pinhole corrosion on top of it. Together they make slab leaks a regular call in older Mesquite neighborhoods.
One isolated leak in otherwise sound pipe is usually a spot repair. Repeated leaks, aging copper, or a line that keeps failing point toward a reroute or a repipe so you are not paying to chase the same problem twice. Detection tells us which situation you actually have before you decide.
- Yes. We answer the phone 24/7 at 214-918-6109. An active slab leak can soak a foundation fast, so we prioritize detection and shutoff to stop the water, then repair. Call before noon and we can often reach you the same day.
IS IT AN EMERGENCY?
Signs Your Mesquite Home Has a Slab Leak
The reason slab leaks are so common under Mesquite homes comes down to the ground itself. Mesquite sits on expansive North Texas clay that swells when it is wet and shrinks hard in the dry summer. That constant movement pushes and pulls on the copper water lines and drain pipes running through your concrete slab until a joint cracks or a line rubs through. Add hard water, which eats pinholes in copper over time, and you have the two leading causes of slab leaks in one home.
The danger is that a slab leak hides. The water runs under the foundation where you cannot see it, sometimes for weeks, while it drives up your bill and works on your slab. That is why locating it correctly, before anyone touches the concrete, matters so much.
Warning signs to call about in Mesquite:
- A warm or hot spot on the floor you cannot explain. That often means a hot water line is leaking under the slab.
- A water bill that climbs with no change in how much water you use.
- The sound of running water when every faucet and fixture is off.
- Cracked, warped, or buckling flooring over the slab.
- Damp spots, mildew smell, or moisture coming up through the floor.
- A water heater that runs constantly to keep up with water it is silently losing.
If you notice any of these in your Mesquite home, call 214-918-6109. We locate the leak first, then quote a spot repair or a reroute based on what we actually find, so you decide on real condition, not a sales pitch.
Comparison
Spot Repair vs. Reroute: Which Fits Your Mesquite Slab Leak?
| Consideration | Spot Repair | Reroute / Repipe |
|---|---|---|
| Best for | A single isolated leak | Repeated leaks or aging pipe |
| Concrete opened | One small area over the leak | Minimal, line routed around the slab |
| Upfront cost | Lower | Higher |
| Long-term risk | Fine if the rest of the pipe is sound | Lowest, the failing line is retired |
| Time on site | Usually same day | One to a few days |
| Pipe age it suits | Detection findings and pipe condition | Detection findings and pipe condition |