You won't see a puddle or a drip. Instead you'll notice a warm spot on the floor, a water bill that doubled for no reason, or the faint sound of water running when every tap is off. By the time the damage shows, gallons have already soaked into the sand and concrete beneath your feet.
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Why Slab Leaks Happen Here
Myrtle Beach sits on coastal plain sand that shifts with heavy rain, tides and seasonal moisture swings. When the ground moves even a little, rigid pipes embedded in concrete twist or rub against the slab until they wear through.
Copper lines corrode faster near saltwater air. PEX and CPVC can crack at fittings when the slab settles unevenly. Builders often run hot-water lines through the slab to save space, so a pinhole in a hot line will warm your floor before you see any other sign.
Once a leak starts, water follows the path of least resistance—down into the sand or sideways along the bottom of the slab. You might not see water damage on the surface for weeks, but your meter is spinning and your foundation is slowly washing out from below.
Signs You Have a Leak Under the Slab
A warm or damp spot on tile, laminate or carpet—especially if it's always in the same place and doesn't dry.
Your water bill jumped even though your household usage stayed the same. A slab leak can waste hundreds of gallons a day without a single drip in sight.
You hear water running through pipes when no faucet, toilet or appliance is on. That's pressurized flow escaping underground.
Cracks appear in your floor or baseboards, or sections of tile start to lift. Water undermines the slab from below, causing it to heave or settle.
Low water pressure at one fixture, or the hot water runs out faster than it used to—signs that water is escaping before it reaches the tap.
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How a Local Pro Finds the Leak
A slab-leak specialist will start with a pressure test: they isolate your water lines, pump them up and watch the gauge. If pressure drops, there's a leak somewhere in the system.
Next comes electronic leak detection. The tech uses sensitive acoustic equipment to listen through the concrete for the hiss of escaping water. Thermal imaging cameras can also pinpoint hot spots where a hot-water line is leaking.
Once they narrow the location to a few square feet, they'll recommend the least invasive fix—sometimes that means opening the slab with a small saw cut, other times it means re-routing the line through the attic or crawlspace to bypass the damaged section entirely.
Every slab leak is different. The pro will explain your options, what each approach costs in time and disruption, and what happens if you wait.
What Happens If You Wait
Water doesn't stop on its own. Every day a slab leak runs, more water soaks into the sand under your foundation, washing away the support your slab needs.
Flooring gets ruined—tile cracks, wood warps, carpet mildews. Mold grows in hidden spaces where air can't circulate. Your foundation can settle unevenly, causing structural cracks that cost thousands to stabilize.
Your water bill keeps climbing. Insurance may cover some of the damage, but most policies won't pay for the leak repair itself or for damage that built up slowly because you didn't act.
If you see the signs, don't wait for the floor to buckle. Call a local slab-leak specialist, get the detection done and stop the damage before it spreads.
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