Plumber fixing pipes in commercial building
Plumbing, Heating, Cooling & Electrical Experts

Slab Leak Repair

A slab leak is a break in a water line beneath a concrete foundation. Because the pipe is buried under the home, damage can continue for weeks before it becomes obvious. Over time, water that escapes can erode soil, crack flooring, and increase utility costs.

Landry Mechanical Inc., Plumbing, HVAC & Electric provides professional slab leak repair using precise detection methods and controlled repair techniques. Our goal is simple: find the leak quickly, fix it correctly, and protect your home’s structure.

If you suspect a hidden leak, schedule a repair visit online or call our team for an inspection.

Floor pulled up to inspect foundation and repair slab leak.

Signs of a Leak Beneath the Foundation

Pipes under a slab rarely fail without warning. Small changes inside the home often point to a larger issue below the surface.

Changes in Water Pressure or Warm Floor Areas

A sudden drop in pressure throughout the house can signal a damaged main line. If a hot-water pipe is compromised, certain sections of the flooring may feel unusually warm.

Sound of Running Water

Hearing water movement when fixtures are off is a strong indicator of a sub-surface break. A faint hissing or steady flow noise may travel through the floor.

Cracks or Persistent Dampness

Moisture along floor seams, baseboards, or walls can indicate water migrating upward. In advanced cases, foundation cracks or lifted flooring may develop as soil beneath the slab shifts.

Our Slab Leak Repair Process

Repairing a pipe beneath concrete requires planning and accuracy. We focus on locating the exact failure point and resolving it with minimal disruption.

Leak Detection

We use acoustic listening equipment and thermal imaging to locate hidden leaks without unnecessary demolition. Once identified, we outline the repair options clearly before any work begins.

Direct Pipe Repair

If the damaged section is isolated, we access the area, remove the compromised pipe, and install durable replacement materials designed for underground use. The system is then pressure-tested to confirm the issue is resolved.

Pipe Rerouting

If multiple sections show wear or corrosion, rerouting may be the better long-term solution. A new line is installed along a safer, more accessible path, reducing the risk of future slab access.

After repairs, we can evaluate visible plumbing components to ensure the system is operating properly as a whole.

Need fast help with plumbing, heating, AC, or electrical? Call or schedule service today!

Why Homeowners Choose Landry Mechanical

Hidden leaks require experience and careful execution. Our team approaches each repair with clear communication and practical solutions.

  • Accurate Detection: We focus on pinpointing the exact break before opening the slab.
  • Lasting Repairs: Materials and methods are selected for durability in underground conditions.
  • Respect for the Property: Work areas are contained and cleaned thoroughly.
  • Straightforward Communication: You’ll understand the problem and the solution before work begins.

Our work is centered on protecting the foundation and restoring confidence in your plumbing system.

Restore Your Foundation

A leak beneath the slab will not resolve on its own. If you suspect a problem, call today to schedule slab leak repair and protect your home’s stability.

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Disclaimer: Offer Must Be Presented At Time Of Sale. Offer Valid for $25 OFF Tank-Type Water Heater Flushes or $50 OFF Tankless Water Heater Flushes ONLY. Cannot be combined with other offers. Some Exclusions Apply. Offer Valid May 1st, 2026-June 30th, 2026 Expires: June 30, 2026

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Frequently Asked Questions

Hear From Our Satisfied Customers

Landry has been looking after my HVAC system for a couple of years now and I have been very happy with their work. The expertise of the technicians is evident, they are always thorough and effective in their work. If the occasion arises they will go the extra mile--for example recently hard wiring my thermostat so I don't need to worry about batteries. As a bonus, I have found them all to be just nice people to have in my house.
Sharon Christenson
3 days ago
great work, knew what they were doing, fixed the problem right, the first time.
Paul
3 days ago
Nice job! Neat, efficient and professional. Expensive but you get what you pay for.
Chris George
3 days ago
We were happy with the service provided. The associate was pleasant and thorough. I would recommend to family and friends.
Nancy Brunelle
3 days ago
The LAST time Landry was here, it was to replace another pipe elbow and a bit more. The technician replaced that OK. However. What the technician DID NOT do fine was turn off the water beforehand. Instead of turning off the water to only my townhouse, he turned off the water to my entire building. This is very bad, because it can mess up the water and pipes for the other tenants in my building. He guessed on the valve. What he should’ve done was ask me which valve it was, instead of guessing. I am NOT happy. The job was ok.
Mary Nolan
4 days ago
Great experience, they were quick to respond, understood my request and had a tech out the next day who diagnosed and fixed the problem in no time!
Rachael England
4 days ago
Very respectful young man , and on time satisfied with the work he did put on the valve on so the leak would stop . Thanks Landry Mechanical Inc and for responding so fast .
Ana Lopez
4 days ago
Landry Mechanical installed a new gas furnace in our home. The job was was excellent and everyone involved was very knowledgeable and professional. A special thanks to Kevin Poore who kept us informed during the installation. Thanks for a great job Landry Mechanical.
Janice Pierpont
6 days ago
They were fast and efficient, had numerius price ranges for repair to suit any budget. They were nice and extremely helpful. Absolutely recommend them. They were great at explaining what needed to be done and why.
Abby Haynes
7 days ago
I would go back to these guys. They come when u need them.
Christine Latour
7 days ago
We had minisplits installed in our home. Ed was wonderful explaining and assisting us through the sales process. JT and Stefanos were hard working men who were informative and respectful during the installation process. We look forward to a more comfortable summer !
Marie Blackmore
1 week ago
Kyle did an excellent job troubleshooting my ac, communicating the issues, showing the options to address them, doing the immediate work that he could, and returning in a timely manner to complete the job. Thank you for your professionalisms.
James Gallagher
1 week ago
Andrew Sanford Came by today to clean our boiler, and we were so happy with the work he did and how well he explained everything to us.
Shana McKay
1 week ago
Five Stars -- Landry Mechanical Delivered from Start to Finish When our heating and cooling system gave out, we needed a company we could trust to move fast, communicate clearly, and get the job done right. Landry Mechanical checked every box. From the initial diagnostic visit on our failed system to the completed installation of our new heat pump, the turnaround was remarkably quick. There was no waiting around for weeks wondering what came next. They assessed the situation, quoted the job professionally, and worked with us to design the right system for our home and our family's needs. The quote itself was straightforward and thorough -- no guesswork, no surprises. The install team was outstanding. They worked cleanly, moved efficiently, and left the job fully complete. This was not a crew that cuts corners or leaves loose ends. Every phase of the project felt organized and deliberate. What really stood out was their communication. Before anyone showed up at our door, we received clear notice of who would be arriving and when. Every update along the way was prompt, professional, and easy to understand. In an industry where homeowners often feel left in the dark, Landry Mechanical kept us fully informed throughout the entire process. Perhaps the simplest testament to their reliability: they said they would be there, and they were. Every time. If you are in the market for HVAC work and want a company that respects your home, your time, and your investment, I would not hesitate to recommend Landry Mechanical.
John S
1 week ago
Very prompt, courteous and knowledgeable!
Maria & Shanay
1 week ago
I have to say, I was surprised at how incredibly thoughtful , careful, professional and thorough this company is. Their commitment to customer satisfaction is real. Kyle was at my place and he is outstanding . I've signed on for yearly everything maintenance . Thank you !
DR. SUSAN S. HOGE
1 week ago
Colin was fantastic. Was able to quickly identify the problem and offer solutions. Great service, highly recommend!
Mike Puffer
1 week ago
Nick was very friendly and professional. Checked out all piping in the house and Gave me all the information I needed for future repairs and installation. Will be considering kitchen sink repair in near future.
Debbie S
2 weeks ago
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    When you need AC, heating, plumbing, or electrical repairs and replacements, call Landry Mechanical Inc Plumbing HVAC & Electric or book online for appointments in Millbury, MA, and throughout Worcester, Middlesex, and Norfolk Counties.