Was Your Townhouse Built Before 1996? Check for Poly-B Plumbing
If your townhouse was built between the late 1970s and the late 1990s, it may contain Poly-B (polybutylene) water-supply piping. Poly-B was commonly installed in Canadian houses, townhouses, and some condominiums during the 1980s and early 1990s. However, construction year alone cannot confirm whether a home contains Poly-B. Some homes from this period were originally built with copper piping, while others may have been partially or completely repiped with PEX during renovations. As a Certified Red Seal plumber with more than 10 years of hands-on experience in British Columbia, I recommend starting with a careful visual inspection of exposed water-supply pipes. You do not need to open walls, disconnect fittings, or move older pipes just to look for identifying features. The most useful clues are the pipe markings, material, fittings, and locations where different pipe materials connect. Watch the video below to learn where to look for Poly-B piping, how to recognize common identificati...