RenoAtlas · Ma maison / My Home

Cast-iron stack: support before cutting or replacement

A cast-iron stack is heavy: before removing a section, know what supports the weight above and where new supports will bear.

V47 · sources checked 2026-08-23

VERT / GREEN

Observe, document and maintain without altering the system.

JAUNE / YELLOW

Measure and diagnose before closing or repairing.

ROUGE / RED

Stop DIY when structure, water, fire or heavy plumbing is involved.

Triage

Vertical section to replace Support/clamp missing or corroded Existing cast-iron-to-plastic transition Documented intact stack

What the professional checks

The plumber checks supported weight, base/floor supports, joints, corrosion, alignment and independent support of new materials.

Sources

CNRC — support des conduites verticales, Code plomberie

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Open the My property dashboardBring together passport, resilience, costs, energy, water, air and local inventory.Open →Update the Home PassportTrack age, condition, warranty, cost and planned replacement of major systems.Open →Record maintenance and observationsKeep dates, symptoms, costs, follow-up and next checks in the browser.Open →Compare repair versus replacementCompare the discounted cost of two strategies over a common horizon.Open →Back up the local property fileExport and re-import RenoAtlas data kept in this browser.Open →