Bubbling Paint on a Cast-Iron Sewer Pipe in South Philly

Nov 11, 2026 | Home Inspections

Original inspection photograph showing a white-painted horizontal cast-iron sewer pipe and cleanout beside a basement wall, with irregular peeling and deteriorated areas.

That bubbling paint caught my attention.

I found this cast-iron sewer pipe during an inspection in South Philly on November 11, 2026. It was painted white, but the bubbling and uneven surface didn’t look right. A closer look showed this section was rotted right through.

Original inspection photograph showing a white-painted horizontal cast-iron sewer pipe and cleanout beside a basement wall, with irregular peeling and deteriorated areas.
The wider view: white paint over the cast-iron pipe, with visible deterioration along its surface.

What the closer look showed

The close-up tells the story better than the painted surface does. You can see heavily corroded metal and an opening through the pipe wall. This wasn’t just a finish that needed touching up.

Close-up of the same painted cast-iron sewer pipe showing flaking white paint, heavily corroded metal and an opening through the pipe wall.
The same finding up close: an opening through deteriorated cast iron. These are two inspection views, not repair photos.

What needs to happen next

This section needs a qualified plumber to evaluate and repair it—not another coat of paint. The plumber should determine how far the deterioration extends and what correction is needed. I’d leave that work to the plumber rather than disturb a weakened pipe yourself.

These photos show the accessible pipe I observed. They don’t establish the condition of the entire underground sewer line, and they aren’t a sewer-camera inspection.

Finding and original photographs: Cainen Bedsaul, TMK Inspections. You can read about what a residential home inspection covers or see our Philadelphia inspection coverage.

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