Between the late 1970s and mid-1990s, Poly B (polybutylene) piping was a popular choice for residential plumbing systems in Canada. Lightweight, flexible, and inexpensive, Poly B seemed like a perfect solution at the time. However, decades later, homeowners across Vancouver and British Columbia are discovering the hidden risks of aging Poly B plumbing—and asking the critical question: Is it time to replace it?
What Is Poly B Plumbing?
Poly B plumbing (also known as Polybutylene or PolyB) is a type of grey plastic piping once widely used for water supply lines in homes. While initially seen as a breakthrough, Poly B has since proven to be prone to degradation, cracking, and leakage, especially when exposed to heat, pressure, and chlorine in water supplies.
Why Poly B Plumbing Is a Problem
Over time, Poly B pipes can:
- Become brittle and crack, leading to unexpected leaks
- React poorly with hot water and oxidants, especially near water heaters
- Have weak connections or fittings, which are prone to failure
- Cause hidden water damage behind walls, ceilings, or floors
- Reduce your home’s resale value and trigger issues with insurance coverage
Many insurance companies now refuse coverage or increase premiums for homes with existing Poly B piping, making this a financial risk as well as a maintenance issue.
Signs You Should Replace Poly B Plumbing
If your home was built between 1978 and 1998, there’s a good chance it may have Poly B pipes. Here are some signs it may be time for replacement:
- Visible gray plastic pipes (usually ½” or ¾” in diameter)
- Plumbing leaks, especially in hot water lines
- Staining on ceilings or walls
- Water pressure issues or unusual pipe noises
- Difficulty securing home insurance due to existing piping
What Is the Cost to Replace Poly B Pipes in BC?
The cost to replace Poly B piping in British Columbia varies depending on the size of your home, the accessibility of pipes, and the scope of the project. On average, homeowners can expect to pay between $6,000 to $15,000+ for a complete repipe. While this may seem like a significant investment, it protects your home from expensive water damage and improves its long-term value and safety.
The Replacement Process
At Pacific Blue Mechanical, we follow a proven, efficient approach to Poly B replacement:
- Initial inspection and quote
- Preparation and access (minimal disruption to your home)
- Replacement with PEX or copper piping
- Repair of drywall and finishing touches
- Testing the new plumbing system thoroughly
Our experienced team ensures a clean, timely process and provides peace of mind from future plumbing failures.
Protect Your Home with Poly B Replacement
If your home still relies on Poly B plumbing, now is the time to take action. Replacing it not only improves your home’s safety and reliability but also increases its marketability and helps you maintain full insurance coverage.
Contact Pacific Blue Mechanical today for a free consultation and discover why we’re one of Vancouver’s trusted names in Poly B pipe replacement.