What it is: Original cast-iron waste/vent piping that corrodes from the inside out over 50–70 years.
Why it matters
At end of life it cracks, leaks and channels, sometimes hidden inside walls.
Why it's common in Bloomington
Standard in Bloomington homes built before the mid-1970s.
Signs to watch for
- flaking rust at the stack base
- slow or gurgling drains
- sewage odor
What we check during the inspection
We note visible cast-iron deterioration and recommend a sewer scope to assess the buried portion.
How it's typically corrected
Sectional or full replacement by a licensed plumber as deterioration warrants.
Concerned about aging cast-iron drain stacks in a home you're buying or selling? Get a free instant quote and we'll evaluate it as part of a full inspection.