What Are the Signs of a Slab Leak?

A slab leak is one of the most serious plumbing problems your home can face. It’s a leak in the water lines running directly beneath the concrete foundation of your house. The water escaping from that broken pipe has nowhere to go but into the soil that supports your home, leading to massive structural damage, foundation cracks, and serious mold issues.

Dealing with this kind of problem means paying keen attention to the slab leak symptoms your house gives you. You have to know what to look for. If you happen to notice any of the signs we’re about to cover, call for professional help right away.

That Mysterious Sound of Running Water

You’re sitting in your living room, the house is quiet, but you hear something. It sounds a lot like water running somewhere. You check the kitchen sink, the bathrooms, and the laundry room. Every faucet, shower, and toilet is off. Yet, the sound persists. This is a tell-tale sign of a slab leak.

That faint hissing or whooshing sound could be water jetting out from a broken pipe in your water supply line, hidden deep under the concrete slab. The sound travels up through your floor, alerting you to a problem. A quick way to check is to head outside to your water meter. With all the water off in your home, take a look at the meter’s leak indicator dial. If it’s spinning, water is flowing somewhere, and a hidden leak is the likely suspect.

A Puzzling Hot Spot on the Floor

Have you ever walked barefoot across your floor and felt a single spot that is strangely warm? It’s a major red flag for a slab leak on a hot water line. When a hot water pipe beneath your foundation springs a leak, all that hot water pools under the concrete, heating the slab from below. You’ll feel this temperature difference right through your tile, wood flooring, or even carpet. Don’t dismiss it as a harmless oddity. That warmth is a clear signal that there is a problem directly underneath your feet.

Your Water Bill Suddenly Shoots Through The Roof

You open your monthly water bill, and your jaw drops. It’s double, maybe even triple, what it usually is, but your daily habits haven’t changed at all. A massive, unexplained spike in water usage is often the first clue homeowners get about a hidden leak.

Think of a slab leak as a tap that’s been left running 24 hours a day, seven days a week. All of that water is being wasted, but it’s not just going down a drain. It’s flowing directly into the ground beneath your home, where it can cause the most damage through soil erosion and pressure on your foundation. This constant water loss will absolutely show up on your bill.

Visible Signs of Water Damage

Eventually, a slab leaking water will make its presence known visually. The constant moisture has to go somewhere, and it often seeps upward, causing noticeable damage to your home’s interior and structure.

Trouble With Your Floors and Walls

The first place you might see trouble is your flooring. That persistent dampness from below can ruin whatever is on top of your concrete slab. Keep an eye out for:

  • Permanently damp or squishy sections of carpet.
  • Warping or buckling hardwood floor planks.
  • Cracked tiles or grout lines for no apparent reason.
  • A persistent, musty odor you can’t get rid of, which points to hidden mold or mildew.

Cracks in Your Foundation

When the soil under your home becomes saturated with water from a leak, it can shift and expand. This movement puts immense pressure on your foundation, which isn’t designed to handle it. You may start to see cracks forming in your drywall, along the ceiling, or on the exterior brick of your home. Sometimes, the house settles so unevenly that doors in your home will start to stick or won’t close properly.

A Sudden Loss of Water Pressure

You hop in the shower one morning, and the water just sort of trickles out. Or you turn on a faucet, and the stream is noticeably weaker than it used to be. A sudden, house-wide drop in water pressure is a strong indicator of a serious leak.

When there’s a break in a main water supply pipe, a large volume of water escapes before it ever reaches your fixtures. The leak is essentially stealing your water, leaving less of it with less force to run your shower, toilet, and sinks. The water that escapes causes erosion of the soil, which can create a void under your foundation and lead to even bigger problems. An immediate inspection from a qualified plumber is necessary.

Don’t Wait — We’re Here to Help

Hearing the sound of running water, feeling a hot spot on the floor, seeing a high bill, or noticing cracks in your walls are all serious slab leak symptoms. A leak under your foundation is a direct threat to your home’s structure and your family’s well-being, especially with the risk of mold and mildew. Older pipes can also suffer from corrosion, making these issues more common over time.

Our team at Quality Service Today provides advanced slab leak detection to accurately find the source of the problem without tearing up your home unnecessarily. And with our slab leak repair services, we fix the broken pipe to help get your home back to a safe, stable, and dry condition.

If any of these signs sound familiar, don’t ignore them. Call Quality Service Today for plumbing services in Mebane, Durham, or one of the nearby areas in North Carolina! We’ll perform a professional inspection and give you the peace of mind you deserve!