When you need it
Poly-B is flexible grey plastic supply pipe, often stamped PB2110, used widely in Canadian homes from the late 1970s until the mid-1990s. Over time, chlorine in treated water and poor fittings combine to make it brittle. Leaks tend to start at connections, especially where plastic fittings or crimp rings were used, and they can be sudden.
- Grey flexible pipe visible near the water heater or main shut-off
- Leaks or drips at fittings under sinks
- An insurer asking about pipe type at renewal
- Selling or buying a home built in that era
Our guide on how to identify Poly-B shows what to look for before you call.
How we do the job
Replacement is planned like a small renovation. We map every run between the main valve and every tap, then decide where the new lines can travel with the fewest openings. PEX is our usual replacement, since it bends around framing and can be fished through existing cavities. Copper is available where it suits.
- Walk the house and trace each existing run
- Agree on access points and protect floors and furniture
- Install a new manifold or trunk line from the main
- Run new lines to each fixture and fit new shut-off valves
- Pressure test the whole system before closing anything up
- Remove and dispose of the old pipe
Water is usually back on the same evening, even when the full job runs over more than one day.
What affects the work
A home with an unfinished basement is the easiest case, since most trunk lines run along open joists. Finished ceilings, two-storey layouts and fixtures on exterior walls add access work. The count of bathrooms and kitchens matters more than the square footage. Drywall patching after the plumbing is done is usually handled by a finisher, and we can coordinate the timing so walls are not left open longer than needed. Furniture moved for access goes back where it was.
Why insurers ask
Some Canadian home insurers limit coverage or raise premiums for homes with Poly-B because of its claim history. Paperwork showing it has been replaced can help at renewal; ask your insurer what they need. We provide an invoice listing the pipe removed and the material installed.
Brampton specifics
Brampton grew fast during the Poly-B years. Neighbourhoods such as Heart Lake, Professor's Lake, Northwood Park and parts of Sandalwood Heights include many homes from that period. Not all of them have it, and some were already updated, which is why we look before quoting. Learn more on our broader repiping page, or plan ahead with the home buyer's plumbing check.
Asked at the shop counter
Is Poly-B illegal in Ontario?
No. It is no longer installed, but existing systems are not banned. The concern is reliability and insurance, not legality.
How long does replacement take?
A typical detached home takes a few days of work, with water restored each evening wherever possible.
Is PEX safe for drinking water?
Yes. PEX approved for potable water is widely used in Canadian homes and meets the standards required by the Ontario Building Code.
Questions about this job? Call (365) 413-9125 and talk to a plumber.