Polybutylene plumbing — often referred to as PB piping — is one of the most important materials to understand when buying or owning an older home in Las Vegas. While once considered innovative, PB piping has since become known for its long-term reliability issues. During Las Vegas home inspections , the presence of polybutylene piping is always documented so buyers can make informed decisions. What Is Polybutylene (PB) Piping? Polybutylene piping was widely used in residenti