Comparison
Poly B vs Copper: Is Copper Worth the Extra Cost?
Copper has a long track record and some homeowners specifically want it. Here's an honest look at how it compares to Poly B — and to PEX, the pipe we install by default.
We default to PEX on whole-home repipes because it's the industry standard, but we install copper too if that's what you want — no pressure either way.
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Two Very Different Materials
Poly B vs Copper: The Basic Comparison
Poly B is a flexible grey plastic pipe installed across Canada from roughly 1978 to 1998, now known for degrading internally and failing unpredictably at fittings and joints. Copper is a rigid metal pipe with a much longer track record in North American plumbing, generally installed with soldered joints rather than the crimped or clamped fittings used on flexible pipe.
The two aren't really competitors in the way Poly B and PEX are — copper was never phased out the way Poly B was. It's simply a different, higher-cost option some homeowners still choose.
Installation is also a genuinely different process: copper runs are cut to length and soldered joint by joint, which takes more time and a different skill set than snaking flexible PEX through existing framing. That difference in labour is a real part of why the two materials land at different price points on the same repipe.
Cost and Installation
Cost, Durability and Installation Time
Copper generally costs more than PEX for a whole-home repipe, both in material and in labour, since rigid pipe takes longer to run and solder than flexible pipe that can snake through existing framing. Where copper does hold an edge is in long-term durability and a longer real-world track record — it's been used far longer than either Poly B or PEX.
For most homeowners replacing Poly B, PEX offers the better balance of cost, installation speed and reliability. Copper remains a legitimate choice for homeowners who specifically want it, whether for personal preference or a particular application.
Where Copper Still Makes Sense
When Homeowners Choose Copper Anyway
Some homeowners choose copper for the water main or specific exposed runs even when the rest of the home is repiped in PEX, valuing its rigidity and long history. Others simply prefer a metal pipe on principle, or are matching an existing partial-copper system rather than mixing materials.
Whatever the reason, it's a legitimate choice — we install copper the same way we install PEX: licensed, permitted, and with our in-house drywall team closing up every access point afterward.
What We Recommend, Honestly
PEX by Default, Copper on Request
We're straightforward about which pipe we'd choose for most homes, and why.
For the large majority of whole-home repipes, PEX offers the best combination of cost, speed and reliability — see our Poly B vs PEX comparison.
If you specifically want copper, we quote and install it the same way — licensed, permitted, drywall restored.
We'll tell you honestly what we'd recommend for your home, not just what's easiest for us.
Making the Decision
How to Decide Between Copper and PEX
If cost and installation speed matter most, PEX is generally the better fit and is what most homeowners choose for a whole-home Poly B replacement. If you have a specific reason to want copper — personal preference, matching existing pipe, or a particular application — it's still a sound, durable option, just a more expensive one.
There's no wrong answer here as long as it's an informed one — both materials will outperform the Poly B you're replacing, and neither carries the internal-degradation risk that makes Poly B a coverage and resale issue in the first place. The decision genuinely comes down to your budget and your own preference, not a safety concern either way.
If you're still undecided, ask us to break the quote out both ways during your assessment — seeing the actual dollar difference for your specific home tends to make the decision a lot more straightforward than comparing generic numbers.
The best next step either way is the same: a free on-site assessment, where we'll give you a firm quote for both options if you're genuinely undecided.
Common Questions
Frequently Asked Questions
Is copper better than Poly B?
Yes — copper doesn't share Poly B's history of internal degradation. It's simply a more expensive, slower-to-install option than PEX, which is our default replacement.
Why don't you install copper by default?
PEX offers the best balance of cost, installation speed and reliability for most whole-home repipes. Copper is available if you specifically want it.
Does copper cost more than PEX?
Generally yes, both in materials and labour, since rigid pipe takes longer to run and solder than flexible PEX.
Can I mix copper and PEX in the same home?
Yes, some homeowners do — for example copper on the main line with PEX throughout the rest of the home. We can quote either approach and explain the trade-offs for your specific layout.
Will you tell me honestly which one I should choose?
Yes — we'll recommend what actually makes sense for your home and your budget during the on-site assessment, not just whichever option happens to be easiest for us to install.
In Short
Poly B vs Copper — The Short Version
The poly b vs copper decision really comes down to budget and preference: copper is durable and time-tested but costs more and takes longer to install than PEX, the pipe we default to on whole-home Poly B replacements. Either way, we replace failing Poly B pipe with the material you choose and restore the drywall in-house, one crew, one price.
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