Full Cast Iron Trunk Line Replacement
& Bathroom Restoration
How Bison Plumbing tackled a grueling crawlspace pipe overhaul — and earned a loyal, repeat customer for life in Warren, MI.
Aging Cast Iron Pipes Deep Inside a Tight Crawlspace
Kristine Holmes, a homeowner in Warren, MI, was dealing with a scenario that most contractors dread: a fully deteriorated cast iron trunk line and both stacks buried beneath her home in an extremely confined crawlspace. Aging cast iron is a recipe for cracked joints, root intrusion, and sewage backups — and left unaddressed, it creates serious long-term structural damage and health risks.
To make matters more demanding, the workspace was barely navigable, requiring technicians with the skill, physical endurance, and professional commitment to see the job through without cutting corners.
⚠️ Degraded Pipe Infrastructure
The original cast iron trunk line and both stacks had reached end of service life, creating high risk of sewer backups and drain failures throughout the home.
⚠️ Extremely Confined Crawlspace
The crawlspace offered minimal clearance to maneuver tools, pipe sections, and debris — making every step of the job more physically demanding and technically complex.
⚠️ Full Debris Removal Required
Once the old cast iron was cut out, every piece of pipe, fitting, and debris had to be carefully extracted from the crawlspace and hauled completely off the property — with zero mess left behind for the homeowner to deal with.