Can I replace polybutylene pipes myself?

Author: Miss Albina Bartoletti  |  Last update: Sunday, January 11, 2026

It involves removing the old polybutylene pipes, installing new CPVC pipes, and connecting them to existing fixtures. The process can be complex, so you need an advanced understanding of plumbing to handle the job yourself. Otherwise, we recommend leaving it to a professional plumber.

Do you really need to replace polybutylene pipes?

Plus, any damage that is done by polybutylene piping is no longer covered by most insurance companies, so it's important to have it replaced before any problems occur.

How much does it cost to replace polybutylene pipes?

Replacing a polybutylene pipe costs on average $15,000, but if you need to repipe a whole home expect to pay much more. The cost to replace polybutylene pipes runs between $300 and $5,100, with the average homeowner spending $1,200 on polybutylene pipe replacement.

Will homeowners insurance cover polybutylene pipe?

In general, insurance companies do not provide coverage within homeowners insurance policies for polybutylene pipes. They are simply too much of a liability as they are easily damaged and will break down, burst, and damage the home.

Can I replace poly b myself?

Poly B can be replaced by a professional plumber or a do-it-yourselfer with the proper tools and knowledge. The first step is to shut off the main water supply to the home. Next, the old poly B pipes will need to be cut away and removed.

How To Replace Polybutylene Water Piping | Ask This Old House

How much does it cost to replace poly-B pipes?

The average price of poly-b replacement is usually between $5,000 and $15,000. Although this is a considerable investment it can save you spending even more when dealing with damages from a burst pipe. It also gives you the peace of mind in knowing an inevitable leaking or burst pipe is no longer on the horizon.

Can I use SharkBite on Poly B?

SharkBite's push-to-connect transition fittings are more efficient and more reliable than traditional pipe transition methods, such as threaded adapters. They also come in a range of different end connections, including PVC and polybutylene.

How do I get free replacement of polybutylene pipes?

Securing financial assistance for Poly B replacement often involves meeting specific criteria, such as income caps or property assessments. Homeowners will need to gear up with the necessary paperwork, which could include proof of income, property details, and quotes for the plumbing work required.

Can you sell a house with polybutylene pipes?

Selling a house with polybutylene pipes can be challenging due to the known issues and potential risks associated with these outdated plumbing systems. Polybutylene pipes, used in residential construction from the 1970s to the mid-1990s, have a history of failure, causing leaks and significant water damage.

Can polybutylene pipes last 30 years?

Polybutylene pipes are at the end of their useful life. According to studies by Fannie Mae and HUD, domestic water supply systems in multifamily buildings reach the end of their useful life after 30 – 50 years.

What do you do if your house has polybutylene pipes?

It is recommended that if a home has polybutylene pipes, the entire plumbing system should be replaced immediately, as a costly leak can happen at any time, without warning, and cause large-scale damage.

How much does it cost to repipe a 2000 square foot house?

The cost to repipe a 2000 sq ft house is between $3,500-$15,000 on average. Some variables that will affect the total cost of the job are the size of the house, the ease of access to the pipes, the material that is used, and if any other plumbing work needs to be done.

What is the life expectancy of polybutylene pipes?

The lifespan of polybutylene piping is 15 years. It deteriorates/flakes from the inside so unless a section is cut and examined, the homeowner will not know the extent of the damage. Chemicals in the water are believed to contribute to the deterioration (including over-chlorination).

Do polybutylene pipes need to be disclosed?

If you are a seller, you should disclose all known conditions that the buyers need to know about the property including the likelihood of leaky pipes. If you decide to replace Polybutylene pipes in your home, that is good. But remember that many homebuyers are willing to take over risks that are fully disclosed.

Is all GREY pipe polybutylene?

Beware of gray pipes: Polybutylene is a gray tube that carries potable water through many homes. PB is pretty much the only gray water pipe ever installed in homes. PB tubing found in homes will have a dimeter of 1/2 inch, 3/4 inch, or 1 inch.

What causes polybutylene pipe to fail?

Polybutylene (Poly B) pipes are considered problematic due to their susceptibility to deterioration and failure over time, especially when exposed to high temperatures, chlorine, and improper installation. These factors can lead to cracking, leaks, and potential water damage in homes.

Do I have to replace my polybutylene pipes?

Although no regulations require the replacement of polybutylene piping with other material, many plumbers recommend doing this, at a cost several thousand dollars. Leaking can happen without warning and can result in flooding and serious damage to a home's interior if it is not immediately stopped.

Is it legal to sell a house with lead pipes?

Your responsibility to disclose lead pipes in your home will depend on where the property is located. The federal government requires you to disclose lead-based paint when selling the house, but not lead pipes.

How common is polybutylene plumbing?

Some experts believe as many as 10 million homes were built with these pipes. Many plumbing professionals at the time whole heartedly recommended these pipes, often proclaiming they were the pipes of the future.

Does insurance cover polybutylene pipes?

Coverage Options

Standard Policies: Typically, standard policies exclude polybutylene due to the high risk of failure. Special Endorsements: Some insurers might offer endorsements for homes with these pipes, usually with higher deductibles and limited coverage amounts.

Is Drano safe for polybutylene pipes?

Drano is Bad for Your Pipes

Drano is designed to continually react and generate heat within your drain until the clog dissolves. Over time, the continued use of Drano can cause your pipes to crack and fail. It's also been known to eat away at the adhesive that joins pipes together.

Can you use PEX fittings on poly B pipe?

Are PEX fittings compatible with Poly B? PEX fittings are not compatible with Poly B piping. The connection methods and materials used in Poly B and PEX systems are different, so they cannot be connected directly.

What fittings can be used on polybutylene pipe?

With polybutylene you could use sharkbite or similar fittings. Make sure that there is a stiffner inside the fitting. Some of them are assemble with them others you have to pop them in. If it is polyethylene then you would use a brass barbed fitting with hose clamps.

Is SharkBite a PEX B?

About SharkBite PEX Pipe

You can find our USA-made PEX-a and PEX-b pipe at wholesalers, on Amazon, at many home improvement retailers or at your local hardware store. SharkBite PEX is: Approved for use in potable water installations.

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