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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.

Star Spangled Pipe Repair

$75 OFF

ANY Plumbing Repair
Disclaimer: Offer Must be Presented At Time of Sale. Valid for Plumbing Repairs Quoted By Landry. Cannot be combined With Other Offers. Discounts are for completed repairs ONLY. Discounts do not apply to dispatch fees. Some Exclusions Apply. Call Office For Details. Offer Valid 7/1/2026-7/31/2026 Expires: Aug 31, 2026

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Hear From Our Satisfied Customers

Excellent service the rep was pleasant, polite and extremely knowledgeable about our issue.
Joe Landry
3 days ago
Evan from Landry Mechanical came last week to do our yearly heating plant review. He explained what he was doing as he proceeded, and completed review and, happy to say, everything was fine.
Dennis W1UE
4 days ago
Update Aug 22, 2026:

We had three separate services completed yesterday and, as we've now come to expect from Landry, every technician was professional, knowledgeable, and courteous. Eddy Russell handled our HVAC maintenance and did a thorough job, explaining what he was doing along the way, adjusting his work order a bit, and completing the job in a timely fashion. Jose Viveiros took care of our plumbing service efficiently, fixed two issues he discovered (Kitchen sink & Bathroom shower), and left everything clean and in great shape. Jonathan Torres installed two mini-split dongles and he and his teammate were prompt, detail-oriented, and made sure everything was working properly before they left. Great communication, quality work, and a smooth experience overall. The only issue I have with to report is not related to the work that was done, but rather the fact that it took many many months for the dongles to be installed. I would have expected some kind of consideration for the prolonged delay. Having said that, I do highly recommend Landry Mechanical.

We engaged with Landry Mechanical and several other HVAC providers in November ‘22 to get bids to replace our aging AC system. The decision to go with Landry was beyond easy, it was a classic no brainer. Between their obvious depth of comprehensive HVAC experience, their knowledge of how to integrate the MASSSAVE incentives into the project, and their commitment to minimizing environmental impact I readily made the decision to leave my long time HVAC provider.

Because of their high value consultative sales approach (Ryan) we ended up contracting with them to replace not just the AC but to install a hybrid ((ductless (mini-split) and duct (heat pump)) system that was completed today under the direction of Jason and with the help of MANY of their team as they worked miracles to complete the install around our hectic holiday schedule. And to top it off, they have guided us through the MASSSAVE process every step of the way so that our actual out of pocket expenses are in part subsidized and part financed at 0%.

In short, without question they have exceeded all my unreasonable expectations from the point of initial engagement to the installation itself. Great team, great customer sensitivity, and now we are fully expecting great reduction in our environmental imprint.
Jonathan Ellman
4 days ago
We have been having some issues with our ac heat in the ceiling unit, we’ve had several people come out and none of them could solve the problem, but today Evan was our guy and he was wonderful in explaining and really looked into the problem! Thank you Evan, much appreciated
Debbie Walters
4 days ago
My tankless hot water heat exchanger corroded and failed, called Landry for repair, Landry sent the technician on the same day. Technicians came on time and looked into the issue and worked with manufacturer to get the part overnight shipped under warranty, came next day and replaced the part. Great service.
ssbollam
5 days ago
Wonderful customer service. Timely and efficient. Highly recommended.
Athena Reese
5 days ago
It starts with the professionalism and courtesy from Anthony and Nick. Not only did they do a great job, but they clean any mess they make. (I know that sounds simple, but you’d be surprised how many contractors miss this point) They kept the noise down to a bare minimum out of respect for my neighbors. They also were working to complete the job from the minute. They came in till the minute they left. Very impressive
Bob Keaney
5 days ago
Awesome service. The 2 young men who came were prompt, professional, very thorough. Would highly recommend.
M Txra
5 days ago
Called Landry Mechanical yesterday around noon to request service as we had no hot water. They were very responsive and sent Joe out to see about our problem. Joe arrived around 3 pm, diagnosed the problem and had us back in hot water by 4 pm. Very professional, efficient, responsive to customer. Would strongly recommend.
Normajene Lamb
5 days ago
Evan was very friendly, courteous and knowledgeable. He diagnosed and fixed our A/C unit in a very timely manner. I would highly recommend him and Landry Mechanical.
Pamela Landry
6 days ago
The installation crew for a water heater and water tank arrived today. They explained everything they were going to do and answered all my questions. The work was very well done and the duo that completed it were helpful, friendly, and extremely competent. This is the second time I have used Landry's. I highly recommend them. I will certainly use them again.
Louise Sisley
6 days ago
Drew was excellent. He was timely, polite and very knowledgeable. He identified our problem which was atypical with his thorough examination. Even gave us a plan B if the issue should happen again. We greatly appreciated his expertise as well as his teaching. We will definitely be keeping Landry as our provider of choice for HVAC service and products.
regina rizoli
6 days ago
Evan was very friendly, courteous and knowledgeable. He diagnosed and fixed our A/C unit in a very timely manner. I would highly recommend him and Landry Mechanical.
Pamela Landry
7 days ago
Evan was friendly, courteous and knowledgeable. He diagnosed and repaired our A/C in a timely manner.. would highly recommend him and Landry Mechanical again!
Pamela Landry
7 days ago
Received consultation for new gas furnace installation. Ed was thorough, professional, and friendly. He explained everything in great detail and made sure all my concerns were addressed. Thank you!
Sabrina Doherty
1 week ago
Rosalie did an excellent job. She is very knowledgeable and I highly recommend her.
Ross Bird
1 week ago
Highly recommend Landry - we needed AC maintenance on central air and mini-split. Easy to schedule appointment, and Sammy did a great job, very personable, professional and clearly explained our options. We were also able to get a maintenance plan at a reasonable price.
Bob Gervais
1 week ago
Professional, respectful and knowledgeable.
Becky Adjei
1 week 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.