Under-Slab Drain Line Investigation
Drain lines under a concrete slab are out of sight. A camera finds out whether they are sound, sagging or broken.
- Leaks & Problem Diagnosis
- Video recorded
- Middle Tennessee
RECCH 0200:00:00Under-Slab Drain Investigation explained.
Many slab-on-grade homes have cast iron or plastic drain lines poured into or under the concrete. When one cracks or settles, the signs are subtle: a damp floor, a persistent odor, a slow drain you cannot explain.
We scope the drain from the nearest cleanout or fixture, trace its path under the floor and look for breaks, offsets, bellies and root entry. Where a defect is found we locate it from above, so a repair opens the smallest possible section of floor.
The deliverables.
Find the break without guessing
The camera shows the damage and its distance.
Mark it on the floor
Locate the spot so a small opening reaches it.
Avoid unnecessary demolition
Open the slab only where needed.
Support insurance and repairs
Recorded evidence of the line below.
Surface vs camera: corroded cast iron
Above ground Camera viewIllustrative visual. Drag the handle to slide between what you see above ground and what the camera sees below.
How it runs.
A clear sequence from first look to final walkthrough.
- 01
Choose access
A cleanout or removed fixture trap.
- 02
Camera under the slab
Follow the drain beneath the floor.
- 03
Locate defects
Trace and mark the spot on the slab.
- 04
Plan the repair
A small opening, a trenchless option or no work needed.
Often paired with this.
FILE D-01 DiagnoseLeak DetectionWe combine the camera with listening and tracing tools to narrow down where water or sewage is getting…Open file 
FILE A-06 InspectIn-Home Drain LinesKitchen, bath and laundry branch lines are small, tight and easy to misdiagnose. A camera ends the guessing.Open file 
FILE A-09 InspectCast Iron PipeCast iron lasts a long time, but it corrodes from the inside. A camera shows how much wall…Open file 
FILE A-07 InspectFloor Drain InspectionA floor drain is your basement’s last line of defense against a backup. Make sure it is clear…Open file Read more on this topic.
FIELD NOTE 030 Locating & LeaksLeak Detection Methods ExplainedCameras, listening gear, tracing and elimination: the ways leaks get found, and where each fits.2 min read FIELD NOTE 017 Pipe Materials & DefectsCast Iron Pipe CorrosionWhat happens inside old cast iron, what it looks like and what can be done.2 min read 
FIELD NOTE 020 Symptoms & DiagnosisGurgling Drains and Sewer SmellTwo warning signs that often travel together, and what they usually mean.2 min read Under-Slab Drains FAQ.
Does a slab leak always mean a drain problem?
No. Water supply lines in or under a slab can also leak. We help identify which system is the problem.
Can the camera follow bends under the slab?
Usually, with a flexible push camera. Some very tight turns or deep lines limit the reach.
Do I have to break the slab?
Only if a defect needs repair. Many problems can be handled without it, and the footage tells you which.
Under-Slab Drains across Middle Tennessee.
Pick your city for its briefing.
See what is under there.
Call now or schedule below. A real person answers.