Last updated: July 2026
Poly B Pipe in Your Home? Here's What You Need to Know.
Polybutylene (Poly B) pipe was installed in hundreds of thousands of Alberta homes between 1978 and 1995. It degrades with age and chlorine exposure — and failure can mean catastrophic flooding with minimal warning. Insurance companies are increasingly refusing coverage or adding exclusions.
Is Your Home Living on Borrowed Time with Poly-B Piping?
If your home was built or renovated between 1978 and 1997, you likely have Poly-B. Replace your Poly-B (gray) piping before its failure forces you to replace your floors, fix your walls, and stress over your lost family mementos.
Fast, professional replacement, water-safe in just 2-3 days.
Why Poly B Fails — and When to Act
Polybutylene reacts with chlorine and oxidants in municipal water supplies over time. The plastic oxidizes from the inside, becoming brittle and prone to cracking — particularly at fittings. Failure is often sudden with no visible warning. A pinhole leak becomes a burst within weeks. Alberta's cold winters and the freeze-thaw cycle further stress aging Poly B fittings.
The pipe was discontinued in Canada in 1995. A home built or renovated between 1978 and 1995 almost certainly has it. You can identify it by the grey (or sometimes blue or black) plastic pipe with the letters "PB" on the surface.
- Degrades from chlorine and oxidants in Calgary municipal water
- Fittings fail first — plastic acetal fittings are highest risk
- Many Alberta insurers now require Poly B replacement or add exclusions
- Selling a home with Poly B requires disclosure in Alberta
- Average Calgary home repipe: 2–3 days, PEX or copper replacement
Why Replace Your Poly-B Piping Now?
It has reached its end of life. With Poly-B, it's been proven that it's not if but WHEN it will fail — and when it fails, it will leak and flood your home.
Fails From the Inside
Poly-B pipes often fail from the inside — no warning, big mess.
Insurance Risk
Many insurers won't cover homes with Poly-B plumbing.
Ticking Time Bomb
Even "problem-free" homes are a ticking time bomb.
Protect What Matters
Protect family memories and memorabilia from water damage.
Hidden in Your Walls
The Poly-B problem is lurking behind and inside your walls.
What's Lurking Inside Your Walls?
Between the mid-1970s and late 1990s, thousands of Calgary homes were built with Polybutylene (Poly-B) plumbing. It was cheap, flexible, and easy to install — until it started failing, sometimes fast at a joint, or slowly as a longitudinal crack.
- Prone to splitting under pressure or chlorine exposure
- Degrades from within — even if it looks fine on the outside
- Delisted from Canadian code in 2005
- Insurance claims often denied if Poly-B is present
Think you can wait? So did a couple of our team members — only to find their homes flooded and numerous family memorabilia destroyed. In one case, after fixing the Poly-B leak and cleaning up the house, while planning when to replace it, another Poly-B pipe sprung a leak — reflooding the house again. Lots of damage, many wasted cleaning hours, and huge frustration.
— From our own team's experience with Poly-B
How to Recognize Polybutylene Pipes
Your home's construction date is crucial to whether you may have polybutylene pipes. Check the pipes that are visible to you — visually, polybutylene pipes are very different from copper or PVC pipes. Here are some common characteristics to identify them:
- Stamped with "PB2110"
- Often gray in color, but may be white, silver, black, or blue
- Half an inch to 1 inch in diameter
- Slightly flexible material
- May be curved, rather than using strict pipe fittings
Which Homes in Calgary Have Poly-B Piping?
Poly-B pipes are typically found in homes in these communities, as these were new homes built during the Poly-B era:
If your home is not located in the above communities, this does not guarantee that you're safe. Many homes built before 1975 were renovated during the Poly-B era, with plumbers using Poly-B pipe to improve their efficiency. Be safe — check your piping.
Polybutylene Industry Lawsuit
The Poly-B issues were so significant that the two producers that made this plastic pipe, Shell and DuPont, agreed to settle a massive class action lawsuit against them, providing homeowners some recourse for this faulty material. For Poly-B related claims, homeowners were given a deadline of May 31, 2005, or up to 15 years after date of installation, to be compensated. About 150,000 Alberta homeowners were eligible for compensation. Unfortunately, we are now far beyond the acceptance period, and therefore no funds are available.
The question remains: did your home replace its Poly-B before that window closed?
What We Replace Poly B With
PEX Pipe (Recommended)
Cross-linked polyethylene is the modern standard for residential plumbing supply lines. Flexible, freeze-resistant, corrosion-proof, and accepted by all major insurers. Significantly easier to route through existing walls than rigid copper — reducing labour cost and drywall disruption. 25+ year lifespan.
Copper Pipe
The traditional alternative — proven lifespan of 50+ years in Calgary's water chemistry. Higher material cost and labour-intensive to route, but preferred by some homeowners and buyers. Accepted universally by insurers and building codes. We carry both and will recommend based on your home's layout and your goals.
CPVC Pipe
Chlorinated PVC — rigid, hot-water rated, and less expensive than copper. Less common for whole-home repipes in Alberta but a viable option for specific applications (hot water runs, boiler systems). We assess which material is best for your specific layout and usage.
How We Replace Your Poly B
Free Home Assessment
We walk through the home, identify all Poly B runs (supply lines, fittings, shutoffs), document the scope, and give you a fixed-price quote before any work begins.
Systematic Repipe
We repipe in planned sections to maintain water service to the home wherever possible. Drywall access is strategic and minimal — we document every opening for your contractor or for our own patching service. Typical homes are completed in 2-3 days, and we restore your water every night.
Inspection & Documentation
Completed work is pressure-tested and photographed. We provide documentation suitable for your insurer confirming Poly B has been removed and the replacement material used — the key deliverable for insurance compliance. Insurance-compliant, resale-ready, and no more hidden risk.
Ready to Replace Your Poly-B?
Free, no-obligation home assessment and a fixed-price quote for your Calgary Poly-B repipe.
Is Your Home Even Covered?
Many Calgary homeowners are being denied new insurance policies or hit with premium hikes — because of Poly-B. Many clients, long-term homeowners and insurance policy holders, have received non-renewal notices unless they replace their Poly-B.
With every Poly-B replacement, we provide insurance documentation to confirm your system is up to today's standards.
What Home Inspectors Will and Will Not Tell You About Poly-B
According to the International Association of Certified Home Inspectors' standard practice, home inspectors are not required to determine the existence or condition of Polybutylene (Poly-B) plumbing. This means that during a standard home inspection, the presence of Poly-B pipes might not be identified or reported.
Even when Poly-B piping is visible, inspectors are not obligated to test its condition. Deterioration often occurs from the inside out, making it challenging to assess without invasive methods, which are beyond the scope of a typical home inspection. This gap in inspection approaches means many homeowners are unaware of the risks lurking behind their walls. Poly-B pipes can fail without warning, leading to significant water damage and costly repairs.
Why This Matters
Unseen Risks
Poly-B pipes can deteriorate internally, making failures sudden and unpredictable.
Insurance Implications
Many insurance companies may deny coverage or increase premiums for homes with Poly-B piping.
Resale Challenges
Homes with undisclosed Poly-B plumbing can face hurdles during resale, affecting property value and buyer confidence.
Our Solution
At Alberta Indoor Comfort, we specialize in identifying and replacing Poly-B piping. Our team conducts thorough assessments beyond standard inspections, ensuring your home's plumbing is safe, up-to-date, and compliant with current standards.
Before, During & After: What You Can Expect
Before
Poly-B gray plastic pipes, typically stamped "PB2110," are often routed through floors, ceilings, and mechanical rooms — everywhere you turn, there's risk.
During
Gray be gone! Neat access holes are cut. Pipes are removed and replaced room-by-room. We patch drywall daily and restore water each evening. New cross-linked molecular structure PEX (red, blue, white) provides peace of mind.
After
Holes be gone! Your home looks untouched, but behind the walls, strong, modern plumbing. Insurance-compliant, resale-confident, and easy — no stress.
Getting a Free Assessment Before Listing Your Home
Calgary real estate agents frequently flag Poly B on listing inspections. We provide a written scope and fixed quote — suitable for disclosures and buyer negotiations.
Over 26 Years Serving Calgary and Southern Alberta
- Trusted by Sears, Costco and Home Depot to support clients
- Licensed, Bonded, Insured, Service Alberta (Government) Authorized and Bonded
- BBB Accredited & Google Certified and Insured
- Vulnerable Sector Background Checked — demonstrating credibility to work with seniors
- Prepaid Contractor Registered with Service Alberta
"Our home had a flood from Poly-B. Alberta Indoor Comfort replaced our pipes cleanly and quickly — total peace of mind."
— Carla M., NW Calgary
Are There Homes with Poly-B and No Problems?
Poly-B "problem free" homes may exist. However, history has shown these homes consistently adhered to the following, to extend their Poly-B life:
- Water pressure was always kept below 40 psi
- Low chlorine levels were maintained
- Installation quality was excellent
- Poly-B was properly sized for its use
- Poly-B at fittings was not bent or stressed
- Poly-B routing minimized bends
- Poly-B was properly supported
- Poly-B has adequate room for expansion
- Correct fittings and connectors were used
- Hot water temperature was constrained
- Water heater was serviced regularly
- Expansion tank functioned on hot water
- Water hammer arrestors were/are used
- Sediment and chlorine filters worked properly
Poly B Replacement Questions
How do I know if I have Poly B pipe?
Look for grey (or occasionally blue or black) flexible plastic pipe under sinks, in your utility room, and at the water heater. It typically has "PB" embossed on the surface along with a date stamp. If you're unsure, a short assessment visit will confirm it. Many homes have a mix — Poly B supply lines but copper drain lines, for example.
How much does Poly B replacement cost in Calgary?
A typical Calgary home repipe runs $6,000–$15,000 depending on the home's size, layout complexity, and the amount of drywall access required. PEX replacement is typically 25–40% less expensive than copper for the same scope. We provide a fixed-price quote after the assessment — no surprises mid-job.
Will my insurer cancel coverage if I don't replace it?
Policies vary. Some Alberta insurers are adding a Poly B exclusion (they'll cover the home but not water damage caused by Poly B failure) rather than outright cancellation. Others are not renewing policies or are requiring replacement as a condition of renewal. Contact your insurer directly — we can provide a written assessment and quote to support that conversation.
How long will this take?
Most replacements are completed within 2-3 business days, depending on size. We restore water each day to ensure the least disruption to your household.
Will you destroy my walls?
We will NOT. We cut strategic access points and then restore everything to its original state — clean and repaired, as if we were never here.
Can I upgrade my faucets during my Poly-B replacement?
Absolutely! This is a great time to update and upgrade your fixtures, sinks, toilets, or even entire bathrooms or kitchens. Many clients elect to upgrade their homes at the same time.
Do you have payment plans?
Yes. We offer monthly payments or can help you explore mortgage refinance options.
Act Now — Prevent the Flood You Don't Deserve
$500 OFF full-system Poly-B replacement, plus a free inspection and written estimate ($400 value).
Experience Matters. Trust Matters.
Hi, I'm Carla, co-owner of Alberta Indoor Comfort. I enjoy sharing our expert information with homeowners so they are empowered to make the right decisions.
For nearly three decades, Mike (the Engineer) and I, and our team at Alberta Indoor Comfort, have been helping Calgary families solve the hidden problems in their homes — from heating and air quality to plumbing issues like Poly-B piping. I've seen firsthand, yes in our own house, the damage these pipes can cause: families displaced, basements gutted, insurance claims denied, and frustration fueled.
It's why our team at Alberta Indoor Comfort takes this Poly-B issue seriously. I'm also a CAPS-Certified Aging-in-Place Specialist, which means I understand how a home needs to function for real life — for moms with kids, for seniors wanting to remain independent, for families who just want to feel safe, secure, and energized every day.
Our company is Licensed, Bonded, and Insured, a Service Alberta Registered Prepaid Contractor — meaning we are actually bonded and you have legal recourse through the government. We are BBB accredited, Google certified (a rigorous background check process), with a long history of satisfied clients, having represented Sears for nearly 25 years; we've also supported Costco and Home Depot, who only trust and engage the best. We are locally owned and operated, meaning we are not a franchise or large corporation where you cease having a name and instead become a profit number. We are real Calgary people, supported by our broader team, ready to answer your calls 24x7x365.
We don't just replace pipes. We restore your peace of mind, protect property value, and make your home safer — for today, and for the many years to come.
We Also Specialize in Senior Accessibility
Give us a call to find out more about how we help with age-in-place.
Poly B Replacement Across Calgary & Area
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Our Recent Poly B Replacement Work in Calgary
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Poly B Out. PEX In. Insurance Happy.
Full-home Poly B pipe replacement for Calgary homes. Free assessment, fixed-price quote, insurance documentation included.
