What polybutylene pipe means
Polybutylene is a gray or blue plastic supply pipe used in many homes decades ago that is prone to failing at fittings and from within.
Also called poly B, PB pipe.
Where it matters on a plumbing job
Inspectors and insurers flag it, which drives whole house repipe jobs. A repipe quote should cover access holes and drywall patching, or say clearly that patching is not included.
What it costs
The main water line replacement cost guide has the typical job at $1,700 and the usual range at $1,200 to $10,000. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Main water line replacement cost
- Licensing: Plumbing license rules by state
- Tools, templates and guides: Free plumbing resources