Polybutylene Pipe Replacement

If you own a home in the Seattle Metro area, including King, Snohomish, or Pierce Counties, a hidden plumbing threat may be putting your property at risk. Many homes built between the 1970s and mid-1990s were constructed with polybutylene piping, a material once praised for its low cost but now known for a high failure rate.

Today, insurance companies across Washington are increasingly denying, limiting, or even cancelling coverage for homes with these systems. Replacing your outdated plumbing is no longer just a maintenance task; it is a vital step in protecting your home’s value and your long-term insurability.

What are Polybutylene Pipes?

Builders installed polybutylene (often branded as Qest or Quest) in millions of homes as a flexible, affordable alternative to copper. These pipes are typically gray or blue and were thought to be the future of modern plumbing.

However, over time, the chlorine and oxidants in our municipal water supplies cause a chemical reaction with the plastic. This results in microscopic fractures that expand under pressure, leading to sudden, catastrophic failures. Because these pipes deteriorate from the inside out, they often look perfectly fine on the exterior right until the moment they burst.

Why You Must Replace Your Polybutylene System

Polybutylene systems don’t just leak; they fail without warning. A single burst line can flood walls, ceilings, and flooring, leading to expensive structural repairs and mold growth.

Furthermore, many Washington insurers now view these pipes as a “pre-existing condition.” Some carriers require a full residential repipe before issuing a new policy or renewing an existing one. By acting proactively, you avoid the stress of an emergency and ensure your home remains fully covered.

Signs Your Pipes Are Failing

While internal damage is hard to see, keep an eye out for these warning signs:

Brown or yellow-tinted water at the tap
Recurring leaks that require frequent minor repairs
A sudden drop in water pressure
Visible cracking or flaking on exposed pipe sections
Your home was built between 1978 and 1995

The Repipe Masters Difference: Done in One Day

At Repipe Masters, we understand that the idea of a whole-home project can be overwhelming. As a family-owned and operated company, we’ve pioneered a process that prioritises your convenience.

While general plumbers may take a week to finish a job, our specialised focus allows us to complete most single-family home repipes in just one day. We protect your flooring and furniture with protective sheeting and handle the entire project from start to finish, including professional wall patching. We leave your home clean, smooth, and ready for a fresh coat of paint.

Choosing the Right Materials: PEX vs. Copper

We only use the highest-quality, American-made materials. During your consultation, we provide an estimate for our two primary options:

PEX Piping: We use premium RAUPEX by REHAU and AquaPEX by Uponor. These materials are corrosion-resistant, flexible, and quiet.
Copper Piping: Ideal for those who prefer traditional, durable metal systems with a long-proven lifespan.

No matter which material you choose, all of our residential projects are backed by a Limited Lifetime Warranty on parts, materials, and workmanship.

Secure Your Home Today

Don’t wait for a leak to force your hand. Protect your investment with the experts who focus exclusively on repiping Seattle homes.

Image credit: // Shutterstock // Formatoriginal

Nick Singh and his crew were absolutely awesome. He’d done a similar job a while back for my sister-in-law, and I went with him because of her strong recommendation, and because he had the best bid–by several thousand dollars–of the four people I got quotes from. They showed up when they said they would, and got the job done in precisely the amount of time he’d estimated it would take. I’m going to extend the plumbing in the spring, adding a second bathroom to the house which it sorely needs, and these are the guys I’m going to hire.”

HANK GRAHAM in Seattle

“Nick and his crew were VERY PROFESSIONAL. Arrived on time and DONE in one day. Explained all questions I had. So I HIGHLY recommend going straight to Nick and skip the “other” guy.”

NORM ERBENICH in Maple Valley

“They were fantastic. Even the ditch in the yard was meticulously covered so we could barely see where it had been. When encountering difficulties getting through the garage floor, they instead went up and over, insulated, and didn’t charge us extra. If I had it to do over again, I would get a bid directly from this fine company. If I ever need a plumber, this is the company I will call”

CAROL BERGSMA in Fall City

JIM & CHARLOTTE in Federal Way

“You guys were great. very good communication. You guys know your work and how to get it done. Thank you Bill and Baba for your overview on a good job done”.”

WAYNE PORTER in Bothell

“I was extremely pleased with the professional performance of your entire team. Everything patched and left clean. I was very, very impressed – and thank you. It’s wonderful having water pressure and actual hot water to use throughout my home again.”

H. LETTICH in Burien

“Complete repipe including to meter. Excellent very good work and covered every detail even nail guards where needed. Everything very well done.”

BRETT ANGAL in Kent

“Great work, these guys know their business. I did not think it would go so quickly and “easily” (for me) but they re-piped my house in a day. That was 3 years ago, and it has held up great. They were on time, tidy, did what they promised and gave me plumbing I can be confident about. Now over the holidays we had a plumbing issue, a small leak in an old pipe out near the meter, and they came out today and repaired it, digging when its in the 30’s outside. Now that I have new pipes stem to stern I can rest easy. I so appreciate that they are plumbers I can rely on”

KAY BRATTON in Tacoma

“They included the outdoor faucets front & back without extra cost, I also added a third bathroom, plus replacement of the main water line from the city meter to the house, that job on the main water line replacement was an extra cost but it was good deal for me. The most important thing for me, was they did this whole project in one day, & they guaranteed that they will do it in one day & they did it, i was very impressed. Repipe Masters did a quality work and they were always on time, they were very prompt, and even came early to give us an estimate, & when ist time to do the job they were on time right on the money, & they even finished the job a couple of hours early. I would highly recommend them to my neighbors for a similar project”

TAD GORDON in Bellevue

“Nick and crew did a fantastic job on the repiping of our house and replacement of our water heater. The crew was very professional and completed the job in half a day! They gave me the choice of not replacing pipes that had already been converted to copper which was much appreciated. They also replaced a couple of worn out faucets on our bathtub and main bathroom sink. The supervisors on the job explained everything they were going to do beforehand. The drywall repairs they completed were very well done and the patchwork required was minimal. They were able to do most of the repiping of the upstairs from down below which saved most of our walls from being cut into! All of our plumbing works like it should and we have cleaner water and better pressure. Overall, I would highly recommend them”

LEIF KRUSENSTJERNA in Lynnwood

“This is the third time they have re-piped a home for us in the past 3 years. They repiped ou mothers home, our home and now our son’s home. They are a great company to work with. That is why I called them again to repipe our son’s home. The crew arrived promptly on the day and time scheduled. They were all very friendly, professional and very careful with the home. They worked fast and had no problems answering any questions or concerns we might have had. Made good suggestions on where to install outside faucets. We were very pleased with the work they did, they are experts in re-piping. Most of the crew had worked together for over 10 years. Must be a good company to work for if they can keep their employees working with them that long. We will not hesitate to recommend them for any repiping to be done. I know I will call them again if the occasion arises. Thank you to the whole team!”

FRANCETTE BEELER in Tacoma

Polybutylene Pipe Replacement

What are Polybutylene Pipes?

Why You Must Replace Your Polybutylene System

Signs Your Pipes Are Failing

The Repipe Masters Difference: Done in One Day

Choosing the Right Materials: PEX vs. Copper

Secure Your Home Today

Call Us! 206-362-2772

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