Slab Leak Repair in McKinney, TX

James Armstrong Plumbing repairs slab leaks in McKinney, TX. 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 breaking up a floor to search. Detection runs $300 to $500 and you get a flat written quote before any concrete is opened.

We run out of our shop at 844 Dalworth Dr in Mesquite, about 40 minutes from McKinney. That distance is the reason we book McKinney slab leak work as scheduled appointments instead of emergency dispatch. You get a set arrival window and a plumber who is not stuck in traffic on 75.

Same-Day Service — Call Before Noon • Most calls are answered within 15 minutes

Trusted plumbing services shield icon

Licensed Master Plumber

License #M39428

Home plumbing services icon for residential customers

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.

James Armstrong Plumbing cartoon mascot badge
Google Reviews G logo for James Armstrong Plumbing ratings

GET AN ESTIMATE NOW

Just your name & number  — we’ll handle the rest.

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.

Terms and Conditions | Privacy Policy.

Our Services

Comprehensive Plumbing Solutions
for Homes & Businesses

At James Armstrong Plumbing, we handle every aspect of your plumbing system — from quick fixes to complex installations.

Clay movement and hard water are the two causes we find under nearly every McKinney slab leak. Detection tells us which one you have, and that determines whether a spot repair or a reroute is the right answer.

Most Requested
Plumbing fixture and toilet repair services icon

Plumbing Repairs and Installation

Get fast help from a trusted plumber in the DFW for leaks, fixture installs, and upgrades. We restore your plumbing with smooth, reliable work.

Tankless water heater installation icon for James Armstrong Plumbing

Water Heater Services

From quick fixes to full replacements, our water heater services in Dallas-Fort Worth, keep your hot water steady. We work on all standard and tankless models.

Most Requested
Water heater services icon for James Armstrong Plumbing

Drain Cleaning Services

Stubborn clogs disappear with our drain-cleaning solutions in Texas. We clear the buildup fully so your drains flow the way they should.

Gas line plumbing services icon for James Armstrong Plumbing

Sewer Line Plumbing

Our team handles sewer line plumbing in the DFW , with careful inspection and precise repairs. We keep wastewater moving safely away from your home.

Drain cleaning services icon for James Armstrong Plumbing

Gas Line Plumbing

Safe and reliable gas line plumbing in the DFW, is just a call away. Whether it’s a leak, repair, or new line, we follow strict safety standards.

Emergency Service

Emergency Service — Available 24/7

Burst pipe? Major leak? Don’t wait. Our emergency team serves the entire DFW area around the clock.

Technician available now

Proudly partnered with leading brands

James Armstrong Plumbing licensed technicians team in Mesquite, TX

Meet James Armstrong

Meet the Master Plumber Serving DFW: James Armstrong

James Armstrong has been a Mesquite-resident Master Plumber since 1995. What began as helping neighbors fix 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 always stand behind your work. Today, James and his crew serve Mesquite, McKinney, Sachse, Garland, and the broader DFW metro from the Mesquite headquarters at 844 Dalworth Dr.

“In thirty years of plumbing across the DFW metro, including McKinney, the drain calls almost always come down to two things: tree roots in the older neighborhoods, and grease and hair buildup in the newer developments. We camera-inspect first, then choose hydro-jetting or snaking based on what we actually see — not on what gets you to the highest invoice.”

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’s the kind of commitment that’s earned us thousands of repeat customers and a reputation across the DFW metroplex for honest, reliable work.

Why Choose Us

Why McKinney Homeowners Choose James Armstrong

Licensed and certified plumber badge for James Armstrong Plumbing

Licensed & Certified Technicians

Our plumbers are fully licensed, professionally trained, and committed to delivering quality workmanship that meets today’s industry standards.

Upfront and transparent plumbing pricing icon

Transparent, Upfront Pricing

No hidden fees and no surprises. Just clear, honest pricing you can trust before we begin any repair or installation.

24/7 emergency plumbing response time icon

Fast & Friendly Service

We respect your time. Our technicians arrive promptly, work efficiently, and treat you and your home with courtesy and care.

Guaranteed satisfaction plumber shield icon

The Armstrong Clean Promise

Floor protection, shoe covers, and a meticulous cleanup on every job. If your home isn’t cleaner than we found it, we pay for the cleaning.

Five-star rated plumbing reviews badge icon

5-Star Rated by Homeowners Like You

Local families choose us for reliable plumbing and friendly service. Your comfort, safety, and satisfaction are the reasons we do what we do.

24/7 emergency plumber availability icon

Emergency Response Available

Afterhours emergency calls accepted. Call (214) 918-6109.

Emergency Calls Accepted After Hours & Weekends as well.

Plumbing Emergency? We Take After-Hours & Weekend Emergency Calls. (214) 918-6109 • Most calls responded to same day.
James Armstrong Plumbing service van in Mesquite, TX

Our Process

What to Expect
 
When You Call

From your first call to our follow-up check-in —
here’s exactly how we take care of you.
Decorative wave divider for James Armstrong Plumbing site
01
Call James Armstrong Plumbing customer service icon

Call or Book Online

Speak with a real person, not a call center. We schedule at your convenience.

02
Search plumbing services magnifier icon

Same-Day Inspection

A licensed plumber evaluates your issue on-site. No guesswork.

03
Affordable plumbing pricing dollar sign icon

Upfront Quote

You approve the price before work begins. The number you see is final.

04
Licensed and trusted plumber icon

Clean, Expert Work

Armstrong Clean Promise — we leave your home better than we found it.

05
Guaranteed quality plumbing service checkmark icon

Follow-Up Guarantee

We check in within 24 hours and follow up to ensure everything holds.

No hassle estimate · No obligation · Real person answers

Customer Reviews

What Our Customers Say

4.8
Five-star rated plumber in Mesquite, TX customer reviews badge

Service Areas

Serving Communities Across
Dallas-Fort Worth

Latest Tips

From Our Blog

Row of four wall-hung urinals with exposed chrome flush valves and gray privacy partitions on a tiled wall

Commercial vs Residential Plumbing: What Changes When a Business Calls

Commercial vs residential plumbing for facility and property managers: fixtures, drain and gas loads, permits, licensing, staying open.
Read Article
Water pooling on a garage floor around the base of a leaking water heater

Why Is My Water Heater Leaking? A Full Guide

Where your water heater leaks tells you if it can be repaired. Tank seam, T&P valve, drain valve or fittings. North Texas plumber, call 214-918-6109.
Read Article
Stainless under-sink grease trap on a red quarry tile floor below a stainless sink, gray drain pipe running into it

Grease Trap vs Grease Interceptor: Size, Flow and What Each Catches

A grease trap is the small unit under or near a sink. An interceptor is the large tank outside. How they differ and why lines ...
Read Article
Brass hose bib on a brick wall with an insulated faucet cover ready to fit

Outdoor Faucet Freeze Protection, North Texas

Stop a burst hose bib before it starts. What actually works on North Texas brick homes, and what does not. Call James Armstrong at 214-918-6109.
Read Article
Foam insulation being fitted to a copper water line in a North Texas attic before winter

How to Winterize Your Plumbing in North Texas

Protect your North Texas pipes before the first freeze. Attic lines, hose bibs and shutoff valves, step by step. Same-day service, call 214-918-6109.
Read Article
Plumber kneeling at an open floor cleanout in a commercial service corridor, feeding a jetter hose from a reel cart

Hydro Jetting vs Snaking a Commercial Drain: Which One, and When

Hydro jetting vs snaking for business drains: when a cable is enough, when jetting is the right call, and why the camera goes in first.
Read Article

FAQ

Frequently Asked Questions

Have questions? We’ve got answers. Can’t find what you’re looking for? Give us a call anytime.

Our friendly team is available 24/7 to help you.

Yes, for scheduled slab leak work. Our shop is at 844 Dalworth Dr in Mesquite, about 40 minutes from McKinney, so we book McKinney jobs as scheduled appointments with a set arrival window rather than emergency dispatch. For an active emergency in McKinney we would rather tell you to call someone closer than have you wait on a truck stuck on 75.

Detection runs $300 to $500. That covers locating the leak with electronic and acoustic equipment and pressure testing so we know the exact spot before any concrete is opened. Repair cost comes as a flat written quote after detection, once we know whether you need a spot repair or a reroute.

McKinney sits on Blackland Prairie clay that swells when wet and shrinks in dry summers. That movement stresses the copper and drain lines running through your slab until a joint cracks or a line rubs through. Hard water from the North Texas Municipal Water District supply adds pinhole corrosion in copper on top of it. Those two causes account for nearly every slab leak we find in McKinney.

Yes. We locate first, then open only the small area directly over the leak. Electronic listening equipment, acoustic sensors, and pressure testing pinpoint the failed section under the slab, so we are not breaking concrete to search for it.

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 so you are not paying to chase the same problem twice. Detection tells us which situation you actually have before you decide.

Work that removes, replaces, or relocates piping generally requires a residential stand-alone plumbing permit through the City of McKinney Citizen Self-Service portal. Minor leak repair that does not remove, replace, or relocate pipe generally does not. We pull the permit as part of the job. Confirm current requirements with City of McKinney Building Inspections at 469-617-4800 for your specific project.

Our friendly team is available 24/7 to help you.