What is a slab leak?
A slab leak is a leak in a water line that runs under or inside the concrete foundation of a home. Because the pipe is buried, the first sign is often damage you can see rather than the leak itself, such as damp flooring or a rising water bill.
Signs of a slab leak
- A warm or hot spot on a tile or concrete floor, which can point to a hot water line leak
- A water meter that keeps moving when all water is off
- The sound of running or hissing water when no fixture is in use
- Damp carpet, lifting flooring, cracked grout or wet baseboards
- A sudden rise in your water bill
- A musty smell, or mold-like growth near the base of walls
If you see these signs, turn off the water and read the leak indicator on your meter. Our guide to the signs of hidden water leaks explains how.
What causes slab leaks in the West Valley?
- Corrosion and pinhole leaks in aging copper pipe
- Pipes rubbing against concrete, rock or other lines as the home settles
- High water pressure that stresses fittings
- Shifting or expansive soil around the foundation
- Poor original installation or defective fittings
Who fixes the pipe, and who handles the water damage?
A licensed plumber or leak-detection specialist locates the leak, often with electronic listening equipment, and recommends a repair. Options usually include repairing the pipe through the slab, re-routing the line overhead or repiping. Ask the plumber to explain each option.
A restoration provider handles the water damage: extracting water, drying flooring, baseboards and drywall that wicked up moisture, and checking for conditions that support mold. See burst pipe and leak cleanup and structural drying.
Slab leaks and insurance
Coverage varies. Some policies cover the resulting water damage and the cost of accessing the pipe, while the pipe repair itself may not be covered. Long-term leaks are often excluded, so report problems early. Read our insurance claims help page for what to document.
Act early
A slab leak that runs for weeks can undermine soil, damage flooring across several rooms and drive up your water bill. If you suspect one, stop using water where you can, document what you see and call (786) 928-1890 if water damage is already present.
Quick answers
Can I fix a slab leak myself?
No. The pipe is under concrete, so a plumber or leak-detection specialist should locate and repair it.
Does a slab leak always mean tearing up the floor?
Not always. Depending on the location and the plumber’s recommendation, the line may be re-routed overhead instead of breaking the slab.
Need help now?
If water is already in your home, call (786) 928-1890 for 24/7 help in the West Valley. See our emergency water damage restoration service.
West Valley Water Damage is a referral service. Information here is general and not legal, insurance or engineering advice.
