Under Slab Leak Detection and Repair

At DFW Foundation Repair, we’re proud to be North Texas leaders in Leak Detection and Under Slab Plumbing Repair.

Don’t Wait for Water Damage to Get Worse

We handle major plumbing repairs for both residential homes and commercial properties, all under the direct supervision of a licensed Master Plumber. Whether it’s trenching between your house and the city water connection, tunneling under concrete slabs, or replacing entire sewer systems — we do it all with precision, care, and experience.


Why Under Slab Leaks Are Serious

Water, sewer, and drainage leaks beneath a home’s foundation can cause major structural damage, skyrocketing repair costs, and serious foundation issues.
When you spot warning signs like slow drainage, high water bills, or foundation cracks, don’t wait. Let our team of experienced slab leak experts guide you through the right solution — fast and effectively.


Our Full Range of Under Slab Plumbing Services

  • Testing Incoming and Outgoing Water Lines

  • Trenching to access and repair water lines

  • Tunneling under the home’s foundation for safe plumbing repairs

  • Repair or Replacement of Incoming Water Lines

  • Repair or Replacement of Sewer and Drain Lines

  • Professional Under Slab Plumbing Services

  • Work Supervised by Master Plumber and Experienced DFW Foundation Teams


Testing Your Water Lines

  • Incoming Water Lines:
    Incoming lines are pressurized, meaning leaks often reveal themselves quickly.
    We’ll locate and repair leaks efficiently — and if your water line is made of aging galvanized metal, we recommend upgrading to durable, corrosion-resistant PVC piping for longer life.

  • Outgoing Sewer and Drain Lines:
    Outgoing lines rely on gravity, not pressure.
    When replacing these lines, ensuring the correct downward slope to the city’s sewer main is critical for proper drainage. Our experienced team handles these repairs through careful tunneling, without cutting into your home’s slab — protecting your foundation’s structural integrity.


Why We Avoid Cutting Through Slabs

While some companies choose to jackhammer through slabs, we see this as a last resort.
Tunneling preserves your foundation’s strength, minimizes structural risks, and helps keep repair costs within your budget.


How We Perform Trenching and Tunneling

  • Trenching:
    For short distances, we hand-dig trenches. For longer distances, we use trenching machines to expose the needed water lines.

  • Tunneling:
    Our 4′ x 4′ hand-dug tunnels allow safe access under your home for repairs. After work is complete, we use professional backfill techniques with proper soil compaction to ensure your slab remains properly supported.


Drain and Sewer Line Replacement

Concrete and cast-iron pipes older than 40–50 years have often reached the end of their useful life.
We replace these outdated systems with modern PVC pipes — proven to last over a century — protecting your home for generations to come.


The DFW Foundation Repair Advantage

🏆 Expertise in Slab Leak Detection and Repair
🏆 Master Plumber Supervision
🏆 Safe and Non-Invasive Tunneling Techniques
🏆 Highest Quality Workmanship and Cleanups
🏆 Fair, Transparent Pricing
🏆 Fast, Free Estimates in Just 30 Minutes!

We don’t believe in offering you short-term “cheap fixes” that will cost you more in the long run.
Our goal is to deliver durable, lasting repairs that save you money — and protect your home — for decades.


Best Slab Leak Repair Costs in North Texas

When you invest in slab leak repairs with DFW Foundation Repair, you’re investing in the long-term health of your home.
We combine competitive pricing with top-tier service, offering you the best value in the Dallas-Fort Worth region.

If you suspect a slab leak or drainage issue beneath your home, contact us today.
Our experts are standing by to inspect, estimate, and solve your under slab problems — all with the experience and integrity you can trust.

Estimates Only Take Half an Hour!
Call Now to Schedule Your Free Appointment!