What Are Polybutylene Pipes and Why Is Poly-B Plumbing Bad?
Polybutylene pipes are a type of plastic pipe that was a popular alternative to copper piping from 1978 until 1995. Over a couple of decades, Polybutylene pipes were used as water supply pipes in millions of homes in Canada and the United States. These days, Polybutylene piping is only discussed when you’re discussing their replacement with a plumber.