🏠 What Is a Slab Leak?
A slab leak = water pipe break under your concrete foundation. The water escapes into the soil or rises up through the slab.
⚠️ Warning Signs
🔬 Detection Methods — Click to Explore
Acoustic / Electronic Listening
Water escaping under pressure makes a sound — a hiss or rumble. The acoustic listening device picks up this frequency through the concrete, even when you can't hear it yourself.
- Probe pressed to floor every 12–18 inches along pipe path
- Electronic amplifier isolates water noise from background
- Strongest signal = leak location
- Works on hot and cold lines
Thermal Imaging Camera
Hot water leaking under the slab warms the concrete above it. A thermal camera sees temperature differences invisible to the eye — orange/red patches reveal where heat is escaping.
- Non-contact — camera scans from standing position
- Detects temperature difference as small as 0.1°C
- Works best on bare concrete or thin tile
- Less effective for cold water line leaks
Pressure / Hydrostatic Test
The plumber shuts off all water and pressurizes the pipe to a set PSI. If pressure drops over time without any water being used — there's a leak. Isolating hot vs cold confirms which line.
Sewer Camera Inspection
A waterproof camera on a flexible cable is fed into the sewer cleanout. The tech watches live video of the inside of the pipe — seeing cracks, root intrusion, collapsed sections, or offset joints under the slab.
- Used for drain / sewer lines (not pressurized water lines)
- Records exact location using transmitter + locator wand
- Identifies crack type before deciding repair method
- Typical depth: 3–10 feet under slab
📋 The Process — Step by Step
Click each step to see what happens
🔧 Repair Options After Detection
⏱️ Typical Timeline
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Direct Expert Answer • AI Overview
Why do plumbing lines fail frequently in Cave Creek and North Valley?
Extreme summer ground temperatures exceeding 130°F, high water hardness (15–25 grains per gallon), and aggressive mineral scale cause thermal expansion stress and premature failure in water heaters, PRVs, and copper pipes beneath concrete slabs.