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Home Plumbing Polybutylene Piping

The Polybutylene Repipe Professionals Across the North Valley

Polybutylene PipingPolybutylene is a form of plastic resin that was used extensively in the manufacture of water supply piping from 1978 until 1995. Due to the low cost of the material and ease of installation, polybutylene piping systems were viewed as "the pipe of the future" and were used as a substitute for traditional copper piping. It is most commonly found in the "Sun Belt" where residential construction was heavy through the 1980's and early-to-mid 90's, but it is also very common in the Mid Atlantic and Northwest Pacific states.

These are typically gray or white in color with a dull finish.

The piping systems were used for underground water mains and as interior water distribution piping. Industry experts believe it was installed in at least 6 million homes, and some experts indicate it may have been used in as many as 10 million homes. Most probably, the piping was installed in about one in every four or five homes built during the years in which the pipe was manufactured.

How to Tell If You Have Poly

Interior - Polybutylene used inside your home can be found near the water heater, running across the ceiling in unfinished basements, and coming out of the walls to feed sinks and toilets. Warning: In some regions of the country plumbers used copper "stub outs" where the pipe exits a wall to feed a fixture, so seeing copper here does not mean that you do not have poly.

Exterior - Polybutylene underground water mains are usually blue, but may be gray or black (do not confuse black poly with polyethelene pipe). It is usually 1/2" or 1" in diameter, and it may be found entering your home through the basement wall or floor, concrete slab or coming up through your crawlspace; frequently it enters the home near the water heater. Your main shutoff valve is attached to the end of the water main. Also, you should check at the water meter that is located at the street, near the city water main. It is wise to check at both ends of the pipe because we have found cases where copper pipe enters the home, and poly pipe is at the water meter. Obviously, both pipes were used and connected somewhere underground.

Will the Pipes Fail?

While scientific evidence is scarce, it is believed that oxidants in the public water supplies, such as chlorine, react with the polybutylene piping and acetal fittings causing them to scale and flake and become brittle. Micro-fractures result, and the basic structural integrity of the system is reduced. Thus, the system becomes weak and may fail without warning causing damage to the building structure and personal property. It is believed that other factors may also contribute to the failure of polybutylene systems, such as imp roper installation, but it is virtually impossible to detect installation problems throughout an entire system.

Throughout the 1980's lawsuits were filed complaining of allegedly defective manufacturing and defective installation causing hundreds of millions of dollars in damages. Although the manufacturers have never admitted that poly is defective, they agreed to fund the Class Action settlement with an initial and minimum amount of $950 million - thousands of homeowners took advantage of this program through Able Plumbing alone.

Able Plumbing was the authorized contractor under this settlement serving all of California north of Sacramento.  Unfortunately, the claims period for this settlement has run its course.  For mobile home repiping, one of the requirements is that the home must have been manufactured (with polybutylene piping) within 11 years of the claims date.

Fortunately, Able Plumbing continues to provide this expert and cost effective service directly to our community.

Our experience, volume and efficiency allows us to provide the highest quality service and materials at very reasonable cost. An Able-Standard replumb of your home would include the following:

  • We will replace all the polybutylene waterlines within your home with your choice of CPVC, Type M Copper, or Type L Copper piping - PEX may also be considered as an alternative material.  CPVC is not recommended for homes where rodents have unfettered access to the piping but is generally preferred in all other situations.
  • New brass emergency shutoff valves will be installed at the sinks and toilets.
  • New stainless steel supply lines will be connected to the fixtures.
  • The main water lines will be installed above the moisture barrier for protection.  If we install any pipes below the moisture barrier they will be insulated.
  • Any access holes we create in the moisture barrier will be repaired with approved materials and will be attached with contact cement and butterfly staples to insure a permanent repair.
  • Inside your home we will use access panels or cover plates where necessary for shower valve and laundry valve access.  This will provide access for future maintenance of your plumbing valves whenever that is necessary.
  • We take care to protect your home while we are there.  We provide expert crews for a top quality and efficient project that is almost always completed in a single day for your convenience, but should the job take more than one day we will temporarily connect at least one bathroom.


Call Able Plumbing today for more information.

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Contractors License: CA License #627760

Able Plumbing & Electrical, tel: 530-564-1023. Website & Marketing: Plumber Marketing