Cast Iron Stack Replacement in St. Louis, MO
Leaks inside a wall, sewer gas odors, or slow drains throughout your home? Our licensed, background-checked technicians replace failing cast iron stacks with code-compliant PVC — partial or full — with upfront flat-rate pricing.
Licensed & Insured
Never subcontracted
40+ Years in STL
1900s–60s homes
Honest Scope
Partial or full
Flat-Rate Price
No hidden charges
Or call / fill out the form for an estimate
Call or fill out the form below
Estimate provided before any work begins · Financing available
Complete Stack Replacement Services
From diagnosis to final walkthrough, every step of your stack replacement is handled by our own licensed, background-checked technicians — never subcontracted.
Cast iron pipe replacement experts since 1984
Why Proper Stack Replacement Matters
In older St. Louis homes, cast iron soil and waste stacks corrode from the inside out. By the time a leak or sewer smell appears, internal scale and rust have often compromised the line. We inspect the full run and provide a permanent solution — partial or full stack replacement with modern code-compliant PVC.
Partial vs. Full
We quote only what needs replacing — never overselling.
Code-Compliant
Proper permits pulled and venting matched to local codes.
Cast Iron Soil & Waste Stack Replacement
Full removal of corroded cast iron and installation of new code-compliant piping sized for your home.
Partial & Full Stack Replacement
We quote only what you need — an isolated section or the entire stack, depending on where the failure is.
Vent Stack Repair & Replacement
Restore proper venting through the roof so your drains flow and sewer gas stays out of the home.
Cast Iron to PVC Conversion
Modern, long-lasting PVC that won't corrode from the inside out, sized and tied in correctly.
Camera Inspection & Diagnostics
We trace the exact location and extent of the failure before recommending any replacement.
Branch Line Tie-Ins
Every fixture branch is reconnected to the new stack with proper fittings and slope.
Connection to the Main Sewer Line
Clean, code-compliant transition from the new stack down to your main sewer connection.
Leak & Sewer Gas Source Diagnosis
Pinpoint the source of leaks, odors, and slow drains so the right problem gets fixed.
Wall & Floor Access + Code-Compliant Permitting
We handle the access work, protect your home, and pull the permits the job requires.
Simple From Start To Finish
No confusing steps, no surprises. Here's exactly what happens when you call Plumbing Masters. An estimate is provided before any work begins.
Request an Estimate
Call us or fill out the form. Tell us what you're seeing — a leak in a wall, a sewer smell, or slow drains throughout the house — and we schedule a visit at a time that works for you.
On-Site Assessment
A licensed technician inspects the stack, traces where the failure is, and confirms how much of the line needs to come out. You get the findings explained in plain language, no jargon.
Clear Scope Before We Start
We tell you whether a partial replacement solves it or the full stack needs to go, what access is required, and what the job involves. We do not recommend work you do not need.
Upfront Flat-Rate Pricing
Before any work starts, you get a clear flat-rate price for the job. No hidden fees and no number that changes after the fact.
Scheduled Replacement
Once you approve, we get to work. We arrive on time, protect your home during the job, replace the failed cast iron with new code-compliant material, tie in your branch lines, and haul away the old pipe.
Final Walkthrough & Completion
We test the system, walk you through what was replaced, answer questions, and confirm you are satisfied before we leave.
Ready to start with Step 1?
Call us or fill out the form at the top of the page for an on-site assessment.
What Sets Plumbing Masters Apart
We've been serving St. Louis families for over 40 years. Our technicians average 20+ years of hands-on experience on local cast iron pipe systems.
St. Louis Since 1984
Family owned and operated for over 40 years, working on the older homes in this area.
We Know the Housing Stock
Cast iron stacks from the 1900s through the 1960s are exactly what we've been replacing for four decades.
Never Subcontracted
Fully licensed, background-checked technicians — our own team, averaging 20+ years of hands-on experience.
Experience That Matters
20+ years average experience matters on a job with this much behind-the-wall work.
Honest Scope
If a partial replacement fixes it, that's what we quote. No work you don't need.
Upfront Flat-Rate Pricing
A full cost breakdown before work starts. No hidden fees, no number that changes.
Done Right the First Time
Code-compliant work backed by our guarantee. Quality you can rely on.
Trusted & Rated
A+ BBB rating, 4.9 on Google, Nextdoor Neighborhood Fave. Licensed, bonded and insured.
WHAT ST. LOUIS HOMEOWNERS
ARE SAYING
Real stories from homeowners who trusted Plumbing Masters to clear backups, inspect lines, and get their drains running right.
"Arrived on time. Professional and courteous."
Bobby & AJ did great work. Arrived on time. Knowledgeable, professional and courteous. Plumbing Masters is the best!
Daniel Abkemeier
Common Questions About Stack Replacement
Clear answers before you schedule your on-site estimate.
Proudly Serving Greater St. Louis
Based in St. Louis and serving South and West County since 1984. Don't see your town? Give us a call, we likely cover it.
Call or Fill Out the Form for an Estimate
Upfront flat-rate pricing before work starts · Financing available