What Is a Slab Leak? Causes, Signs & Solutions

Jaclyn Basilone | May 21 2025 11:47

At Brooks Plumbing , we know that plumbing issues are the last thing any homeowner in Garland, TX, wants to deal with. But when it comes to slab leaks, ignoring the signs can lead to major—and expensive—damage. If you’re noticing strange puddles on your floor, a spike in your water bill, or unexplained dampness, a slab leak may be the culprit.

This guide will help you understand what slab leaks are, why they happen, how to spot them early, and—most importantly—how we can help you fix them fast and right.

The Problem: What Is a Slab Leak?

Imagine this: beneath your home’s concrete foundation lies a network of water pipes. Over time, these pipes can develop cracks, holes, or bursts due to age, pressure, corrosion, or shifting soil. When that happens, water begins to leak under the slab—hence the name slab leak.

Slab leaks can go undetected for weeks or even months, slowly causing foundation damage, mold growth, and skyrocketing water bills. According to the Insurance Information Institute , water damage is one of the most common homeowner claims, and slab leaks are a major contributor.

What Causes a Slab Leak?

There are several potential reasons a slab leak can occur, especially in areas like Garland, where the soil composition and weather can affect underground plumbing:

1. Pipe Corrosion

Over time, the copper pipes commonly used under slabs can corrode, especially if the water has a high mineral content or if electrolysis occurs (a chemical reaction between the pipe and the surrounding soil).

2. Foundation Shifting

Garland’s expansive clay soil is known to swell and contract with moisture changes. These shifts can place excessive pressure on your pipes, causing them to crack or rupture.

3. Poor Installation

Improper pipe laying techniques during original construction—such as bends, kinks, or poor soldering—can create weak points that fail over time.

4. Abrasion

Pipes that rub against concrete, gravel, or other pipes during water flow can slowly wear down, eventually creating a leak.

The Signs: How to Know If You Have a Slab Leak

Slab leaks often start silently. But over time, they give off warning signs. If you notice any of the following symptoms, it’s time to call a professional:

  • Unusually high water bills
    If your usage hasn’t changed but your water bill keeps climbing, you might be losing water under your foundation.
  • Warm spots on the floor
    A leaking hot water line can create warm areas on tile or hardwood floors.
  • Damp or wet flooring
    Moisture or puddles without an apparent source may be seeping up through the slab.
  • Low water pressure
    A break in the line can reduce the pressure in your plumbing system.
  • Mold or mildew smells
    Persistent dampness beneath your home can lead to hidden mold growth.
  • Sound of running water
    Hearing water when everything is turned off is a major red flag.

Don’t ignore these signs. A slab leak can damage your flooring, ruin your foundation, and even threaten your home’s structural integrity.

The Guide: How Brooks Plumbing Can Help

At Brooks Plumbing, we’ve been helping Garland, TX, homeowners identify and repair slab leaks with precision and care. We believe that you deserve a plumbing partner who communicates clearly, shows up on time, and delivers reliable repairs that last.

The Plan: How We Fix Slab Leaks

We use state-of-the-art technology to detect and repair slab leaks without unnecessary damage to your home.

Step 1: Accurate Detection

We start with non-invasive leak detection equipment—like electronic listening devices, infrared thermography, and pressure testing—to pinpoint the exact location of the leak.

Step 2: Expert Evaluation

Once we’ve found the source, we’ll explain your repair options clearly—whether it’s spot repair, pipe rerouting, or a full repipe.

Step 3: Professional Repair

Our experienced team performs the necessary work with minimal disruption, following best practices and city code.

Step 4: Cleanup and Prevention

After repair, we clean up our workspace and recommend preventive maintenance to help avoid future leaks.

The Result: Peace of Mind and a Dry Home

When you call Brooks Plumbing, you’re not just getting a fix—you’re getting peace of mind. We’ll help protect your home, lower your water bills, and stop water damage before it starts.

Repair Your Slab Before It’s Too Late

A slab leak won’t fix itself. The longer you wait, the more damage it can cause. Don’t risk mold, cracked floors, or foundation issues. If you suspect a problem, contact Brooks Plumbing today for expert slab leak repair in Garland, TX.

We’ll find the leak, fix it fast, and help you get back to living in a dry, safe home.