Should I Repipe My House If It Has Polybutylene Pipes?

Yes — if your house was built between 1978 and 1995, plan to repipe polybutylene pipes instead of patching them one leak at a time. Polybutylene fails suddenly, from the inside out, and Phoenix's hot, chlorinated hard water makes it fail even faster. I own Phoenix Plumbing Co., and my family has been pulling this gray pipe out of Valley homes since 2012. Here's how to know if you have it, why it fails, and — honestly — when you can afford to wait.

How to Tell If Your Home Has Polybutylene Pipe

Polybutylene — plumbers call it PB — is a gray, slightly flexible plastic pipe used in tract homes from 1978 to 1995. The easiest tell is the stamp: look for “PB2110” printed along the pipe. Check these spots:

• The pipes coming out of your water heater
• Under the kitchen and bathroom sinks
• Where the main line enters the house, near the front hose bib or in the garage

The pipe is joined with plastic or copper crimp fittings. Not sure what you're looking at? Our $129 40-point inspection will tell you in one visit.

Why You Should Repipe Polybutylene Pipes Before They Fail

PB doesn't wear out the way copper does. Chlorine in city water attacks the plastic from the inside, so the pipe flakes and cracks where you can't see it. The outside can look brand new on the day it bursts. Phoenix makes it worse in three ways:

• Our water is chlorinated and very hard — 16 to 20 grains per gallon — which speeds up the breakdown.
• Attic and wall temperatures pass 115 degrees all summer, and heat makes brittle plastic even more brittle.
• Most Valley homes sit on concrete slabs, so a hidden failure can run for weeks before you see a stain.

The big 1990s class-action fund for polybutylene is long gone — today the risk is all yours — and insurance companies know it. More and more carriers refuse to write new policies on homes with PB, or drop coverage at renewal. I've had customers repipe not because of a leak, but because their insurance agent gave them 60 days.

The Maryvale Rental That Says It All

A landlord called us last spring about a “small stain” on a ceiling in Maryvale. By the time we opened the drywall, a PB fitting behind the shower wall had been spraying for days while the tenants were at work. Between the drywall, the flooring, and the mold cleanup, he was into it for around $12,000 — and the pipe that caused it was still in the rest of the house. Our leak detection equipment found two more weeping fittings that same afternoon. He repiped the whole place the next week for less than the water damage cost him. That's the math with polybutylene: you rarely pay for just one leak.

When You Don't Have to Repipe Today

I'll be straight with you: if your PB has never leaked, nothing says you must repipe this week. Plenty of homeowners plan it out. If the budget is tight, here's a sane way to wait:

1. Get an inspection so you know what shape the pipe and fittings are really in.
2. Find your main water shutoff and make sure it actually works.
3. Watch your water bill — a jump is often the first sign of a hidden leak. Our guide to the signs of a slab leak covers exactly what to look for.
4. Ask about staging the work or financing so the repipe fits your budget.

But be honest with yourself about the risk. Polybutylene doesn't fail on a schedule, and waiting is a bet that it fails small instead of big. If your insurance renewal is coming up, find out where your carrier stands on PB before they tell you.

What a PEX Repipe Day Actually Looks Like

The standard fix is a whole-home repipe with PEX — a flexible modern line that shrugs off our hard water and heat. Here's how a typical day goes on our pipe repair and replacement jobs:

1. Morning: we shut off the water, protect your floors, and make small access cuts in the drywall.
2. Midday: new PEX lines run through the attic and walls to every fixture, with new valves — and fresh water heater connections while we're in there.
3. Evening: water back on. Most single-story Phoenix homes have running water again the same night.

Drywall patching and texture happen on a follow-up visit. You'll see the flat, all-in price in writing before we start — that's how we run every job.

Get a Straight Answer About Your Pipes

If you think you have polybutylene, don't lose sleep — but don't ignore it either. Call Phoenix Plumbing Co. at 602-834-1208 and a live Phoenix dispatcher will set up your $129 40-point inspection. We'll show you exactly what pipe you have, what shape it's in, and what a repipe costs — backed by our written workmanship warranty. When the day comes to repipe polybutylene pipes, you'll see the full price before we lift a wrench.