6 Reasons Why PEX Plumbing Is Bad for Your House (2024)

Polymers, plastic, and all kinds of synthetic material are replacing the good old days of metals when it comes to housing and construction. One of these popular furnishings is PEX plumbing pipes. PEX pipes became popular in the ‘80s and ‘90s and thousands of houses today still have them. While they were all the rage when they first came out, over the years, many of its shortcomings have come to light.

If you’re considering PEX plumbing in your house, you might want to reconsider. Here’s why:

What is PEX Plumbing?

According to The Balance Small Business, PEX is a cross-linked polyethylene in a tube form for plumbing purposes. The high prices of copper led many people to opt for PEX plumbing. PEX material is also favored for its flexibility when it comes to fitting. PEX can be bent around to accommodate a good fitting and is preferred over copper and polyvinyl chloride piping. Undoubtedly, PEX pipes are one of the easiest pipes to install. However, they come with quite a few downsides and could end up costing house owners thousands of dollars in damage.

Let’s discuss in details: why PEX plumbing is bad for your house:

Why is PEX Plumbing Bad for Your House:

1. Chlorine

PEX plumbing and chlorine do not mix well, which is ironic. Chlorination badly affects the durability of the PEX plumbing system and shortens its lifespan. The chlorine in the water inside PEX pipes speed-up the brittle oxidative failure ofcross-linked polyethylene. This failure leads to sudden leakage and sometimes even bursting of the pipes.

To combat this failure, manufacturers began to add antioxidants into the PEX piping. However, it only ended up delaying the oxidation to a slight degree. Now, the chlorine degrades the antioxidants first but eventually ends up reaching the pipe and causing failure.

2. Light

PEX plumbing lacks versatility because of its sensitivity to light. PEX cannot be taken anywhere outside the house where it is directly exposed to UV for a long period. The synthetic material of the pipes can slowly disintegrate due to the light of the sun. Even light bulbs have been known to affect the lifespan of PEX water lines.

3. Bacteria

While this is a rare failure, it still happens. Under unique circ*mstances, PEX water lines become highly susceptible to bacteria. This mostly happens when PEX pipes are installed deep under the ground and vulnerable to moisture. In extreme cases, the bacteria caused by moisture can penetrate inside the PEX pipes and contaminate the water.

4. Non-Recyclable

As is the case with most plastics, PEX pipes are also non-recyclable. Large pieces of PEX pipes are discarded when new water lines are installed. Unfortunately, we have yet to find a way to bring these discarded pipes back to use. Until then, all that plastic has nowhere to go.

5. Rodents

A very common problem reported by many users is that PEX pipes are vulnerable to rodent attacks. Unlike copper pipes, rodents’ sharp teeth can easily chew through PEX water lines. This damages the entire waterline and eventually leads to leakage and contamination. If your house has a particular rodent problem then have your water lines checked and opt for a material that is resistant to rodent attacks.

6. Quality of Water

One of the biggest downsides of PEX plumbing is that some of them affect the taste and odor of water. It’s important to know about this risk before installing PEX water lines in your house. In some cases, the smell and taste are so unpleasant, that people have to replace the pipes all over again. Due to a lack of research on the subject, the reasons behind the unpleasant taste and smell are unknown.

Better Options than PEX

The following options might be costlier than the plastic plumbing, but they’d last a long time and give you the ultimate peace of mind. Here you go:

  • Copper: Copper pipes are tough. They are heat resistant, safe from corrosion, and are naturally antimicrobial.
  • Polyvinyl Chloride Piping (PVC): PVC pipes are an inexpensive alternative to copper pipes. They are resistant to rust and corrosion and can sustain high-pressure water.

Trusted Plumbing Company in Halifax

Are you living in an old home and have never given much thought to the kind of materials used in your water lines? Perhaps it’s time that you get them inspected and see for yourself how much outdated and deteriorated they have gotten over time. In case you are building a new home, make sure you conduct proper research before deciding what kind of water lines you want in your home. One wrong decision can put your family’s health at risk. Contact your trusted plumbing company in Halifax today and get your free quote!

6 Reasons Why PEX Plumbing Is Bad for Your House (2024)

FAQs

Why do plumbers not like PEX? ›

Pex pipes are more susceptible to damage from exposure to UV rays, which can cause them to deteriorate over time if they're used for outdoor applications. Moreover, Pex pipes can react with certain chemicals in the water, potentially leading to leaching of harmful substances into the water supply.

What are five things that can go wrong with PEX? ›

Why is PEX Plumbing Bad for Your House:
  • Chlorine. PEX plumbing and chlorine do not mix well, which is ironic. ...
  • Light. PEX plumbing lacks versatility because of its sensitivity to light. ...
  • Bacteria. While this is a rare failure, it still happens. ...
  • Non-Recyclable. ...
  • Rodents. ...
  • Quality of Water.
Dec 4, 2020

Is PEX plumbing bad for your health? ›

Most research suggests that PEX isn't ideal for drinking water. Filtering water from PEX lines makes it safe for consumption. Most homeowners stick to other pipe options for water supply lines, like copper.

Where should you not use PEX? ›

Pex is also highly resistant to corrosion and scale buildup, which are common issues with copper pipes. However, the material is not suitable for outdoor use as it can be damaged by exposure to UV rays.

Where is PEX banned? ›

Currently, PEX plumbing is one of the most widely used plumbing systems around the world. It was temporarily banned in California for a while due to concerns about toxic materials but this was later disproven by laboratory tests.

Do mice eat PEX pipe? ›

PEX Pipe Is Vulnerable

Rodents Chewing Through PEX Pipe is a common problem in our area. It doesn't matter how old your home is, if you have an attic, you need to watch for rodent damage to PEX Pipe or PVC.

Is PEX banned in California? ›

Effective immediately, local governments in California may approve the use of cross-linked polyethylene (PEX) drinking water systems in all residential and commercial applications, as well as hospitals and clinics.

Is there a lawsuit against PEX? ›

A settlement has been proposed in a class action lawsuit against Defendant NIBCO Inc. (“NIBCO”) in which it was alleged that NIBCO PEX 1006 Tubing, NIBCO F1807 Fittings, and/or NIBCO Stainless Steel Clamps (the “Covered Products”) are defective and can leak causing water damage.

Can PEX plumbing burst? ›

PEX pipes are extremely burst- and freeze-resistant because of their insulation properties and natural flexibility. However, at certain temperatures, even PEX can no longer stand up to the elements.

Does sunlight hurt PEX pipe? ›

6. Keep PEX away from sunlight. Like most other plastics, PEX will become brittle if exposed to sunlight for too long and may crack under pressure. Typical exposure limit is ~30 days.

How many years does PEX plumbing last? ›

PEX: Due to its flexibility and durability, PEX piping should last at least 50 years. PVC / CPVC: Under typical conditions, these pipes should last up to 100 years. Keep in mind that PVC pipes are often used for drainage because extreme heat can damage them.

Will PEX water line freeze and burst? ›

PEX pipe will expand if frozen and contract to its original shape when thawed. But putting frequent stress on the system weakens it, increasing chances of failure and leaks. So, to preserve the strength of your pipes, you should use the same standard insulation precautions with PEX to keep it from freezing.

What is the life expectancy of PEX plumbing? ›

In most cases, PEX is extremely durable and lasts up to 50 years or more. PEX piping is also less likely to crack or break than metal pipe because it does not expand and contract as much when heated and cooled.

At what temperature does PEX pipe burst? ›

PEX pipes are extremely burst- and freeze-resistant because of their insulation properties and natural flexibility. However, at certain temperatures, even PEX can no longer stand up to the elements. The temperature cutoff for PEX pipes is around -7°C.

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