Why carriers flag it
Carriers flag polybutylene because of its history of fitting and pipe failures that lead to water-damage claims. It frequently shows up at renewal, on a new policy, or during a home sale.
Insurance-required repair
polybutylene (poly-B) plumbing
Your insurer issued a non-renewal, an exclusion, or an underwriting request over polybutylene (poly-B) plumbing — or it surfaced during a sale — in a home built roughly between 1978 and 1995. Repipe deadlines of 30–60 days are common.
What paperwork matters
- A licensed plumber’s repipe invoice describing the work and materials (PEX or copper)
- A pulled plumbing permit where one is required
- The passed inspection / permit sign-off
- A short letter confirming the old poly-B was fully removed/abandoned and the home repiped
Start from your city
Use the location where the work will be permitted and inspected. If your city is not listed, start a request anyway.
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Common questions
Will a repipe restore my insurance coverage?
It often clears the underwriting issue, but every carrier sets its own rules and no plumber can promise a specific carrier will reinstate or keep coverage. Keep your invoice, permit, and inspection so your agent can submit them.
PEX or copper — which should I choose?
Both are accepted modern materials. PEX is typically faster and less expensive; copper is rigid and long-proven. A licensed repipe plumber will recommend based on your home, budget, and local code.
How much drywall gets opened up, and who repairs it?
A repipe requires cutting access points at walls and ceilings. Some quotes include drywall patch and paint and some don’t — confirm what’s included before you sign.
Does insurance pay for the repipe?
Generally no. A repipe required by underwriting is an out-of-pocket cost (typically $6,000–$20,000), not a covered claim.