What is the average life expectancy of PEX pipe?

Friday, July 6, 2018

The estimated lifespan of PEX (Cross-linked Polyethylene) pipe is 40 years. Although it has been on the market for many years and primarily used for hydronic heating, PEX has become much more popular for water supply piping within the last decade. It comes in white and black, or can be color-coded in blue and red for cold and hot water pipes, as shown above.

    To understand the basis, potential use, and limitations of lifespan ratings, see our blog post ”How accurate are the average life expectancy ratings of home components? Are they actually useful? 

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Here’s links to a collection of our other blog posts about PLUMBING PIPES:

How can I protect my pipes to keep them from bursting during a hard winter freeze in North Florida?

Can galvanized steel pipe still be used for new water lines in a house? 

How can I tell if I have cast iron pipes in my house? 

Is it alright to have a shut-off valve on both the hot and cold water pipes at a water heater?

Why can't a sanitary tee be used for a horizontal-to-horizontal drain pipe connection? 

Is a washing machine drain hose required to be secured at the standpipe?

What are the abandoned pipes sticking out of the wall in my house?  

Why is it a problem when a trap under a sink is installed backwards? 

What are the code requirements for plumbing vent terminations?

What are the code requirements for layout of drain piping under sinks?

What causes a gurgling sound when a bathtub or sink drains? 

How can I tell the difference between Corrugated Stainless Steel Tubing (CSST) and a Flexible Appliance Connector (FAC)?

What is a "combination waste and vent" in a plumbing system? 

Does a "QEST" brand mark on pipe mean that it is polbutylene (PB)?

What is a building trap?  

What is a galvanized nipple?

What are the pipes sticking out near my water valves?

Can PEX pipe be installed outside?  

 Is PEX pipe freeze resistant?

How do you accurately find a broken water pipe leak under the floor slab?

What is the difference between water pipe and sewage (waste) pipe? 

Are plastic pipes (PVC, CPVC, and PEX) safe for drinking water? 

What do the ABS, PVC, CPVC, PB, and PEX plumbing pipe names mean?

Is a hot water faucet handle required to be on the left? 

Why is sunlight exposure bad for PVC pipe?

Why can't PVC be used for water pipe inside a house?

What is a dielectric union? 

What's that powdery crust on the pipe connections at the water heater? 

Can I make a trap under the sink from straight pipe and 90º elbows?  

What type of white plastic pipe has the marking CP-112-P in red letters? 

If all the plumbing drains have water in them and you can still smell sewer gas, what's causing the problem?  

How can I tell what type of plumbing pipe I have?

Why is there a flexible accordion pipe under the sink? 

What is the difference between PVC and ABS plumbing pipe?

What is the difference between water service pipe and water supply pipe? 

What are the pipes on my roof? 

What is an "S-Trap" under my sink? Why is it a problem? 

What is a P-trap?

Why is old galvanized steel water pipe a problem for homebuyers?

What does polybutylene pipe look like? Why is it a problem? 

• Which water pipes are an insurance problem and possibly uninsurable?

• Should I buy a house with galvanized steel water pipes?

• Can you connect CPVC pipe directly to a gas water heater? 

    Visit our LIFE EXPECTANCY and PLUMBING pages for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.

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