Free 60-Second Checker
Do I Have Poly B? Find Out in 60 Seconds
Answer four quick questions about your home and its pipes. Everything is calculated instantly, right in this page — your answers never leave your browser, and there's nothing to sign up for just to see your result.
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Your Result
Your Result
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How It Works
How This Checker Works
This checker weighs four real signals, each drawn from what actually identifies Poly B (polybutylene) pipe -- not a guess dressed up as a diagnosis.
The Four Signals
Why We Ask These Specific Questions
Poly B was installed in Canadian homes roughly 1978 to 1998, which is why your home's build year is the single strongest starting signal -- a home built squarely inside that window is far more likely to have it than one built well before or after. Visually, Poly B is a flexible plastic pipe, grey, sometimes black or white, which is why we ask what you're actually seeing at your water heater or main shut-off.
The "PB2110" stamp is the closest thing to certainty a visual check can offer -- it's the manufacturing code printed directly on genuine polybutylene pipe, so finding it settles the question almost definitively. An insurer flag corroborates the picture, since many Canadian insurers only raise Poly B when there's a specific reason to. None of the four questions works in isolation as well as they do combined, which is why the checker weighs them together rather than asking just one.
Being Straight With You
Why We're Honest About What This Can and Can't Tell You
A free tool that claimed to diagnose your plumbing with total certainty wouldn't be honest -- so this one doesn't.
Every result, even the strongest one, points you to a professional confirmation -- never claims to replace one.
Walls and ceilings hide most of a home's pipe runs, so a "no" on visible signs never fully rules Poly B out.
There's no cost to getting the definitive answer, so there's no real reason not to confirm either way.
Common Questions
Frequently Asked Questions
How accurate is this checker?
It's a quick, honest screening tool based on your home's build year and what you can see on the pipe -- not a lab test. The only way to know for certain is a referral to a licensed contractor, where a licensed plumber inspects your plumbing directly.
What does the PB2110 stamp mean?
PB2110 is the manufacturing code stamped directly on genuine polybutylene pipe. If you can find and read it on your pipe, that is about as close to certain confirmation as a visual check gets.
My home was built in the Poly B window but I don't see any grey pipe -- could I still have it?
Yes. Most of a home's plumbing runs inside walls and ceilings where it isn't visible, so not seeing grey pipe at accessible points does not rule it out. A referral to a licensed contractor can check further.
Does my insurer really care about this?
Many Canadian insurers now factor Poly B into coverage decisions, which is part of why an insurer flag is a meaningful signal in this checker. See our Poly B insurance risk checker for a dedicated read on that side of things.
Is this checker free, and does it save my answers?
Yes, it is completely free, and your answers are calculated right in your browser and never sent anywhere. Nothing is saved or transmitted unless you choose to fill out the assessment request form afterward.
Does my house have Poly B, and how do I tell?
Does my house have Poly B starts with build year and then with looking. How to tell if you have Poly B without calling anyone: find where pipe is visible and read it. How to identify Poly B pipe and how to identify polybutylene are the same task - the material carries its own markings.
What colour is Poly B pipe, and what does Poly B look like?
What colour is Poly B pipe: usually grey, though black Poly B pipe and blue Poly B pipe were both produced and both count. What does Poly B look like up close is a dull, slightly flexible plastic with a matte finish. Grey plumbing pipe is the common shorthand for it, but is grey pipe always Poly B - no, so read the markings before deciding.
What do the Poly B pipe markings mean?
Poly B pipe markings are printed along the length of the run. PB2110 stamp meaning is the one that matters: PB2110 is the resin code for polybutylene, and finding it is about as close to certain as a visual check gets. Poly B photos online help you know what to look for, but the stamp on your own pipe is what settles it.
Where should I look - under the sink, at the tank, in the ceiling?
Poly B at hot water tank connections is the easiest place to start, since hot and cold are both exposed there. Then Poly B under sink shutoffs, Poly B in ceiling runs across an unfinished basement, and the Poly B main water line where supply enters the house. Grey water pipe in house cavities is the part nobody can see, which is why accessible points can rule Poly B in but never rule it out.
Is my pipe Poly B or PEX, and does every house from the 90s have Poly B?
Is my pipe Poly B or PEX comes down to colour and stamp: grey carrying PB2110 is Poly B; white, red or blue with a printed rating is PEX. Does every house from the 90s have Poly B - no. Grey pipe plumbing Canada built in those years included plenty of copper, which is exactly what this Poly B checker weighs instead of assuming. Treat any Poly B identification tool, this one included, as a screen rather than a verdict.
In Short
Do I Have Poly B — The Short Version
Whether you have Poly B comes down to four real signals: a home built 1978–1998, grey (or black or white) flexible pipe at your water heater or shutoffs, a “PB2110” stamp on the pipe, and whether your insurer has already asked about it. This free checker weighs all four honestly and instantly, right in your browser, and every result -- however strong -- points you to a referral to a licensed contractor as the only way to know for certain.
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