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Plomberie CommercialeGCI · Grand Montréal
FR

Commercial plumbing — Greater Montreal

Water riser and drain stack replacement

Your building's risers reaching end of life? We plan and execute replacement with minimal disruption — floor by floor, with a clear schedule and tenants in place.

  • RBQ licence 5863-7745-01
  • CMMTQ member
  • 24/7 emergency

The project you can’t improvise

Replacing water risers or drain stacks in an occupied building is as much logistics as plumbing: unit access, water shutdowns, opening and restoring finishes, tenant communication.

This is where our general-contractor DNA pays off: we manage the whole project, not just the pipe.

Our phased approach

  1. Inspection and diagnosis — actual condition, materials, critical points, with camera inspection for drain stacks.
  2. Replacement plan — work sequence, interruption windows, protection and restoration of finishes.
  3. Tenant communication — clear notices, schedules kept.
  4. Phased execution — one stack at a time, water restored every evening.
  5. Restoration and documentation — finishes repaired, work documented for your records and your insurer.

Why not wait for one more leak

A leaking riser doesn’t stop at one incident: it crosses floors, damages finishes and property, and drives up premiums. Planned replacement costs less than forced replacement — no emergency premium, no collateral damage, work grouped in phases rather than reactive patches.

A natural fit with our maintenance contracts for condo boards and property managers.

Explore our maintenance contracts — the simplest way to prevent emergencies.

Frequently asked questions

When should a building's risers be replaced?

The unmistakable signs: recurring leaks on the risers, rusty water, pressure loss, repeated insurance claims and original piping past its useful life (galvanized steel, cracked cast iron). An inspection establishes real urgency so you can plan instead of react.

Do tenants have to move out during the work?

Generally no. We work in phases — stack by stack, floor by floor — with water interruptions planned and announced in advance. The goal: never more than a few hours' interruption at a time for any occupant.

How long does a riser replacement take?

It depends on the number of stacks, floors and units involved. After the initial inspection we provide a phased schedule with clear milestones — and we keep it.

A plumbing problem in your building?

Talk to a commercial plumber now or request a detailed quote — fast response, no obligation.

24/7 direct line

514-700-7100

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