If you have Poly B pipes in your Calgary home, the question is no longer whether they need to be replaced — it’s when, and what it will cost. This guide breaks down the full cost of Poly B replacement in Calgary, what the process involves, why PEX is the right replacement material, and what you should expect from start to finish.

Why Poly B Needs to Be Replaced — Not Just Repaired

One of the most common questions homeowners ask is whether they can simply repair the sections of Poly B that have failed rather than replacing the entire system. The short answer is: repairs are a temporary band-aid, not a solution.

Poly B degrades throughout the entire pipe simultaneously — it is a chemical process caused by exposure to oxidants in Calgary’s municipal water supply, specifically chloramine. When one section fails, it is a signal that the rest of the system is at a similar stage of degradation. Replacing a single fitting or section will not stop another section from failing weeks or months later.

Additionally, most Alberta insurers now require full Poly B replacement — not partial repair — before restoring standard coverage. A documented partial repair will not satisfy an insurer’s condition. Only a complete repipe will.

Poly B Replacement Cost in Calgary: What You Should Expect to Pay

The cost to replace Poly B plumbing in a Calgary home typically ranges from $8,000 to $15,000 for a standard single-family home, with most jobs falling in the $10,000–$13,000 range. Here is what drives that number:

• Home size: A 1,200 sq ft bungalow with one bathroom costs significantly less than a 2,500 sq ft two-storey with three bathrooms. More fixtures, more pipe, more labour.
• Number of bathrooms: Each bathroom adds roughly $800–$1,500 to the job, depending on the fixture count and accessibility.
• Finished vs. unfinished basement: Finished basements require more careful access work and additional patching/restoration after the repipe.
• Accessibility: Homes with open ceilings in the basement or accessible crawl spaces cost less. Homes with fully finished ceilings throughout require more wall and ceiling openings.
• Restoration work: Drywall patching and painting after the repipe are sometimes included in a quote and sometimes quoted separately. Always confirm what is included.

Rough Cost Breakdown for a Standard Calgary Home

• Pipe removal: $1,000–$3,000
• New PEX piping and fittings: $1,500–$5,000
• Labour: $2,500–$8,000
• Drywall patching and restoration: $500–$2,000 (varies significantly by home)

Always get at least two quotes from licensed Calgary plumbers, and make sure each quote clearly specifies whether restoration is included. A quote that looks lower may be excluding patching costs.

Why PEX Is the Right Replacement for Poly B

PEX (cross-linked polyethylene) has become the standard replacement for Poly B in Calgary homes, and for good reason. Unlike Poly B, PEX does not react to chloramine or chlorine in municipal water. It does not become brittle over time. It is freeze-resistant, flexible, and has a proven service life that exceeds 50 years under normal conditions.

PEX is also accepted by all major Alberta insurers as a fully insurable plumbing material — there are no surcharges, exclusions, or conditions associated with PEX. The moment your home is documented as fully repiped with PEX, your insurance situation normalizes completely.

Copper is sometimes suggested as an alternative, and it remains an excellent material — but it costs significantly more than PEX for the same job, and modern PEX performs comparably in residential applications. For most Calgary homeowners replacing Poly B, PEX is the practical and financially sensible choice.

What the Poly B Replacement Process Looks Like in Calgary

Understanding what to expect during a repipe helps homeowners plan appropriately. Here is a typical Poly B replacement timeline for a Calgary home:

1. Assessment and quote: A licensed plumber walks the home, identifies all Poly B runs, assesses accessibility, and provides a written quote. This typically takes 45–60 minutes.
2. Scheduling: Most repipes can be scheduled within one to two weeks of quote acceptance.
3. Day 1 — Repipe: The crew arrives, shuts off the water main, removes the Poly B, and installs the new PEX throughout the home. For a standard home, this takes one full day. Larger or more complex homes may require a second day.
4. Pressure test and inspection: Before the job is signed off, the new system is pressure-tested to confirm there are no leaks. This is a critical step — do not accept a repipe without a documented pressure test.
5. Restoration: Any wall or ceiling openings made during the repipe are patched. Depending on the scope, painting may be done by the plumbing company or arranged separately.
6. Documentation: You receive a written completion certificate and documentation of the work performed — the material used, the scope of the repipe, and the pressure test results. This is what you submit to your insurer to restore full coverage.

How to Tell When Poly B Replacement Is Urgent

Some signs indicate that your Poly B system is under active stress and replacement should not be delayed:

• You have already had one or more Poly B leaks or failures in the home
• Your insurer has issued a non-renewal notice or water damage exclusion related to Poly B
• Your home was built between 1985 and 1995 — the pipe is now 30–40 years old
• You are planning to sell within the next 12–24 months
• You notice discolouration or reduced water pressure (potential early signs of fitting degradation)

If any of these apply, a Poly B inspection and replacement quote should be booked promptly — not after the next renewal cycle.

Get a Poly B Replacement Quote from ER Plumbing & Heating

ER Plumbing & Heating is a licensed Calgary plumbing company with extensive experience replacing Poly B plumbing across the city. We use high-quality PEX materials, perform documented pressure tests on every job, and provide the written completion paperwork your insurer requires.

We service all Calgary quadrants and surrounding communities including Airdrie, Chestermere, Cochrane, and Okotoks. Most assessments are booked within days, and most repipes are completed in one to two days with minimal disruption to your household.

Call 587-777-3164 or email info@erplumbingnheating.ca to book your free Poly B assessment. We will walk your home, give you an honest assessment of the urgency, and provide a detailed written quote — no obligation.