Slab Leaks in Texas Homes: What They Are and How to Spot Them Early

Learn what slab leaks are, why they’re common in Texas homes, and how to catch the early signs before they cause major damage.

In North Texas, slab-on-grade foundations are the standard for homes across cities like Plano, Rockwall, and Quinlan. They’re stable, cost-effective, and built to withstand the expansive Texas soil – but when a slab leak happens, that solid foundation can quickly become a homeowner’s biggest headache.

At Military Plumbing, we’ve seen firsthand how early detection can be the difference between a minor fix and a major repair. If you’re unfamiliar with what a slab leak is or how to catch it early, this post is for you.

What Is a Slab Leak, Exactly?

A slab leak occurs when a water line running underneath your concrete foundation becomes compromised. It might be due to corrosion, a burst pipe, shifting soil, or even improper installation decades ago. Over time, the water seeps into the slab (or underneath it), and the effects can be serious – foundation cracks, mold growth, high water bills, and interior damage are just a few of the risks.

Most Texas homes have water lines and drain lines running through or under their concrete slabs. While leaks in drain lines are typically less urgent (and harder to detect), leaks in pressurized water lines can release hundreds of gallons per day if left unchecked.

Why North Texas Homes Are Especially Vulnerable

Our region’s expansive clay soil is highly reactive to moisture changes – shrinking in drought and swelling during heavy rains. This movement can shift foundations slightly over time, placing stress on the pipes underneath. Add in mineral-heavy water and aging plumbing systems, and it’s no wonder slab leaks are one of the more common problems we get called for in cities like Plano and Rockwall.

Early Warning Signs of a Slab Leak

Slab leaks don’t usually announce themselves with a dramatic gush of water. They’re subtle at first – which is why spotting them early is so important. Here are a few signs to watch for:

• Unexpected spike in your water bill
• Warm or damp spots on flooring, especially if you don’t have pets
• Cracks in your tile or baseboards that seem to grow over time
• Sound of running water when all fixtures are turned off
• Mildew or musty smells, especially in closets or hallways

If you notice one or more of these symptoms, it’s worth having a licensed plumber perform a leak detection assessment. We use non-invasive equipment that can often pinpoint the leak without drilling or tearing into your floors.

What Happens If You Ignore It?

Waiting too long to deal with a slab leak can lead to expensive consequences:

• Foundation damage: Water can erode soil beneath the slab, causing it to shift or settle unevenly
• Mold & mildew: Moisture trapped under flooring or inside walls creates the perfect environment for mold growth
• Flooring & drywall damage: Persistent leaks may bubble floors, warp wood, or cause drywall to bow
• Structural instability: In worst-case scenarios, long-term leaks can weaken the structure of your home

The good news? Most slab leaks can be repaired quickly if caught early. And if the line needs to be rerouted, our team can often do so with minimal disruption to your home.

What to Expect During a Slab Leak Inspection

At Military Plumbing, we use professional-grade electronic listening tools, infrared cameras, and pressure testing to locate the source of the leak without unnecessary damage to your property.

Once we’ve identified the issue, we walk you through your options:

• Direct repair (opening the slab and fixing the line)
• Pipe rerouting (common in older homes)
• In-place pipe lining (in some drain line situations)

We’ll give you clear pricing, honest advice, and a realistic expectation of what’s involved – no surprises.

Prevention Tips for North Texas Homeowners

You can’t always prevent a slab leak, but you can reduce your risk with a few proactive steps:

• Have your home’s plumbing system inspected every few years, especially if it’s 20+ years old
• Install a smart leak detection device like the Moen Flo system
• Address any foundation or drainage issues promptly
• Monitor your water bill monthly – even small changes can indicate a leak

Trusted Slab Leak Help in Dallas-Fort Worth

Military Plumbing has been helping homeowners across Plano, Rockwall, Quinlan, and the greater DFW Metroplex identify and repair slab leaks for over a decade. Our team is licensed, insured, and committed to providing honest, high-integrity service every step of the way.

If you suspect a slab leak – or just want peace of mind – give us a call. We’ll treat your home like our own and get to the root of the problem, the right way.