A slab leak — a water leak in the pipes beneath your home's concrete foundation — is one of the sneakiest and most damaging plumbing problems. Catching it early is critical.
Warning signs
- The sound of running water when nothing is on
- Warm spots on the floor (from a hot-water line leak)
- Unexplained spikes in your water bill
- Cracks in the floor or foundation
- Damp or warped flooring
- A drop in water pressure
- Mold or a musty smell with no visible source
Why they're serious
A slab leak doesn't just waste water — it can erode the soil supporting your foundation, leading to settling, cracks, and structural damage. Left unaddressed, the repair cost grows dramatically.
How they're found and fixed
Plumbers use electronic leak-detection equipment to pinpoint the leak's exact location without breaking up your whole floor. Repair options range from spot repairs to rerouting the affected line, depending on the situation.
Don't wait
If you suspect a slab leak, act quickly. Early detection means a smaller, cheaper repair and prevents structural damage. A plumber with leak-detection tools can confirm and locate it.
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