At DFW Foundation Repair, we are experts in under-slab tunneling for plumbing and foundation repair.
With decades of experience and thousands of feet successfully tunneled, we deliver safe, effective, and non-invasive solutions for under-slab leaks, broken pipes, and plumbing installations — without compromising your foundation.

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Why Choose Tunneling Over Breaking Through the Slab?

When you have a leak or broken sewer line under your home, you typically have two repair options:

• Option 1: Jackhammer through your concrete slab, risking major structural disruption — and often missing the leak altogether if it’s not directly beneath the break point.

• Option 2: Tunneling from outside the home, carefully following the plumbing lines until the leak is located and repaired.

Tunneling is the preferred method because it:

✅ Protects your foundation
✅ Prevents unnecessary damage to your flooring and interiors
✅ Accurately tracks down leaks without guesswork
✅ Provides safer, more effective access to problem areas

While labor-intensive, tunneling delivers better outcomes and avoids further compromising your slab.

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How Tunneling Under Concrete Slabs Works

Our process is straightforward but requires great skill and caution:

1. Digging the Access Shaft
   We start by excavating a 4-foot by 4-foot opening beside the concrete perimeter beam of your home or commercial building.

2. Creating the Tunnel
   We carefully dig under the slab beam, expanding the tunnel as needed to allow for safe material removal and worker access.

3. Maintaining Safety Standards
   We take safety very seriously:

   • Ventilation systems (fans or portable air conditioners) supply fresh oxygen inside long tunnels.

   • Our crews are trained to work safely even when tunneling extends 50-100 feet or more under large properties.

   • Extreme caution prevents tunnel collapse or worker fatigue.

4. Locating and Repairing Pipes
   Once the damaged pipe is located, we carefully expose it and replace it with high-quality PVC piping.

5. Protecting the New Pipes
   We suspend new pipes with metal hangers anchored into the slab.
   This ensures that future foundation movement won’t crush the pipes — a crucial step that many companies skip.

6. Backfilling the Tunnel
   After repairs are completed:

   • We refill the tunnel carefully, watering and compacting soil for stability.

   • Excess soil is responsibly spread, graded for proper drainage, or hauled away to a certified disposal site.

From start to finish, we handle everything — so you don’t have to worry.

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Plumbing Tunnels Done Right

We specialize in:

✅ Tunneling for Water Line Repairs
✅ Tunneling for Sewer Line Replacements
✅ New Plumbing Construction Under Existing Slabs
✅ Foundation-Safe Repair Techniques

Whether your project is residential or commercial, our crews have the training, tools, and techniques needed for safe, effective under-slab tunneling.

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Why Choose DFW Foundation Repair for Your Tunneling Needs?

🏆 Decades of Experience
🏆 Full-Service Plumbing and Foundation Expertise
🏆 State-of-the-Art Safety and Ventilation Equipment
🏆 High-Quality Materials and Workmanship
🏆 No Damage to Your Interior Slab or Flooring
🏆 Competitive, Upfront Pricing

We’ve earned the trust of homeowners and businesses across Dallas-Fort Worth by consistently delivering quality, safety, and results — even in the most challenging tunneling projects.

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Need Expert Tunneling Under Your Slab? Let’s Get Started.

If you suspect an under-slab leak, need major plumbing repairs, or are planning new construction under an existing slab, contact DFW Foundation Repair today.

🔧 Estimates Only Take 30 Minutes!
🔧 Serving Dallas, Fort Worth, and Surrounding Areas

📞 Call now to schedule your free consultation and inspection!