RECENT WORK. CLEAR ANSWERS.

Recurring Drain Stoppages? Finding the Cause Beneath the Slab

A customer wanted answers about recurring stoppages. Our camera and locator helped us explain what was happening—and what could address it.

By Advantage Plumbing Service TeamNovember 2, 20262 minute read

Advantage Plumbing technicians using drain-camera and locator equipment at a roof stack — Our team inspecting through the stack with camera and locating equipment.

When a drain keeps stopping up, customers want to know why. On this call, the homeowner wanted to understand the ongoing issues and the options for addressing them.

Looking beyond the latest stoppage

Our team accessed the drain system through the stack and used our camera and locator systems to inspect and locate the lines. We found several bellies in the bathroom drain line beneath the slab that were causing the recurring problems.

A belly is a low spot in a drain line where water can collect. Clearing an obstruction can help restore flow, but drain cleaning does not correct the pipe's slope.

Inspection camera monitor showing standing water in a belly in a separate drain line — **Example from a separate drain line.** Water collected in a low spot (belly), as seen on the inspection camera.

Drain inspection camera monitor showing the inside of the customer's pipe — A view inside the drain during this inspection. A single photo does not show the whole inspection or establish a repair scope on its own.

A camera for the view, a locator for the location

The camera lets us see inside a drain without opening the entire route first. Locating equipment helps us trace the camera's position so the findings can be connected to a location at the property. Learn more about our video sewer inspection services.

Drain camera equipment beside the roof stack used as an inspection access point — Camera equipment at the stack access point during the visit.

Clear recommendations, without pressure

Based on the findings, we recommended a re-drain: replacing the affected bathroom drain piping to address the low spots. This visit was about investigation and recommendations; the re-drain was proposed, not completed during this call.

Work beneath a slab needs a clear conversation about access, the affected piping, and the repair scope. We explained the findings and provided no-pressure solutions so the customer could decide how to move forward.

More about the tools and inspection process: RIDGID inspection and locating tools and NASSCO's guide to identifying pipe sags.