Polybutylene (PB) plumbing is a type of plastic pipe used in homes built between 1978 and 1995 that is now known for its tendency to become brittle and burst, often due to reactions with chlorine in public water systems. while it can be white, gray, black, or blue, its degradation makes it a significant risk, so a professional inspection and repiping is strongly recommended to avoid leaks and water damage. homeowners should also check their insurance policies, as many companies will not cover damage caused by PB pipes
