What Is Poly B Piping?

Poly B or polybutylene, piping is flexible grey plastic pipe used for indoor hot and cold water supply lines in many Canadian homes built from the late 1970s through the 1990s. Poly B can become brittle and leak over time. It is no longer accepted for new plumbing installations in Canada.

Visual stamp – Smooth grey plastic tubing often marked PB2110 or CSA B137.8.

Where to look – Check near water heaters, under sinks, beside the main water shut off valve and in mechanical rooms.

Code status – Poly B was removed as an acceptable plumbing material in the 2005 National Plumbing Code of Canada. Existing Poly-B is not automatically required to be removed.

Concerned About Poly B in Your Home?

Galaxy Plumbing & Heating provides plumbing inspections, leak repairs and PEX repiping for Vancouver and Lower Mainland homes with Poly B water lines. Book a plumbing inspection or call 604-802-1518.