Decision · Repipe

Copper vs. PEX for a Kanata house repipe

We do both. Here's the honest tradeoffs and what most Kanata homeowners pick.

6 min readBy Kanata Plumbers Editorial
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Quick takeaways

  • PEX: faster install, lower cost, fewer joints, better freeze tolerance.
  • Copper: longer proven track record, better resale perception, no concerns about chemical leaching.
  • For most Kanata Poly B replacements: PEX-A is our default recommendation.

Why we usually recommend PEX-A

For a full-house repipe — most often a Poly B replacement in a 1985-1995 Kanata home — PEX-A is faster, cheaper, has fewer joints (which means fewer leak points), and tolerates a freeze without splitting the way copper does. Modern PEX-A from Uponor or Rehau has a 50-year track record.

We use copper where it's already in place and just being extended, or where the homeowner specifically requests it for resale/perception reasons. Both are good choices; PEX is just the better default for most.

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