PEX Vs. COPPER PIPING
PEX vs. Copper Piping: Which Is Better for Your Home?
If you’re renovating your home, replacing old plumbing, or building a new home, you may find yourself choosing between PEX and copper piping.
Both materials are commonly used in residential plumbing systems, and each has its own advantages. The right choice can depend on your home’s plumbing layout, budget, water conditions, and the type of project being completed.
Here is a closer look at PEX vs. copper piping and what homeowners should know before deciding.
What Is PEX Piping?
PEX stands for cross-linked polyethylene. It is a flexible plastic piping material that has become extremely common in modern residential plumbing.
One of the biggest advantages of PEX is its flexibility. Unlike rigid copper pipe, PEX can bend around corners and obstacles, which can reduce the number of fittings required during installation.
PEX is commonly used for hot and cold potable water lines throughout a home.
What Is Copper Piping?
Copper has been used in residential plumbing systems for decades.
It is a rigid metal piping material known for its durability and long history of use. Many older homes throughout Ontario still have copper water lines, and copper continues to be used in both new installations and plumbing repairs.
Copper pipe is typically joined using soldered or approved mechanical connections, depending on the application.
PEX Is Often Easier to Install
One major difference between PEX and copper is installation.
Because PEX is flexible, a plumber can often run longer sections of piping with fewer connections. This can make installation quicker and easier in areas where plumbing needs to travel through walls, floors, joists, and tight spaces.
Copper is rigid, which means individual pieces must be cut and connected when the plumbing changes direction.
For larger renovations or repiping projects, the flexibility of PEX can make it especially practical.
PEX Can Be More Cost-Effective
PEX piping is generally less expensive than copper.
The material itself usually costs less, and installation can require less labour because PEX is quicker to run through a home.
Copper prices can fluctuate significantly because copper is a valuable commodity. This can make copper plumbing considerably more expensive for a large project.
For homeowners completing a major renovation or whole-home repipe, PEX can often provide significant savings.
Copper Is Extremely Durable
Copper has a long track record in residential plumbing.
When properly installed and used under suitable water conditions, copper piping can last for decades.
It is also resistant to UV exposure, which is important because PEX should generally not be installed where it will be exposed to prolonged sunlight.
Copper’s durability is one reason many homeowners still prefer it for certain plumbing applications.
PEX Is More Resistant to Freezing Damage
Canadian winters can put plumbing systems under significant stress.
No piping material is completely protected from freezing, but PEX has an advantage because it can expand slightly when water freezes inside it.
Copper is rigid. If water freezes and expands inside a copper pipe, the pipe may split or burst.
That doesn’t mean PEX can’t be damaged by freezing temperatures. Pipes should still be properly insulated and protected from cold areas whenever possible.
Copper Can Be Affected by Water Chemistry
Water chemistry can play an important role in the lifespan of a plumbing system.
Certain water conditions can contribute to corrosion or pinhole leaks in copper piping over time.
A professional plumber can help determine whether existing pipe deterioration may be related to age, water conditions, installation issues, or other factors.
PEX does not corrode in the same way metal piping does, which can make it appealing in some situations.
PEX Requires Fewer Connections
Every plumbing connection creates another potential point where a problem could develop.
Because PEX can be installed in long, flexible runs, fewer elbows and fittings may be required compared with copper.
Reducing the number of fittings can simplify the plumbing system and potentially reduce the number of possible leak points.
However, the quality of the installation is extremely important regardless of which piping material is used.
What About the Taste of the Water?
Some homeowners worry that changing piping materials could affect their drinking water.
Both approved PEX and copper piping are widely used for potable water systems.
If you notice an unusual taste, smell, or colour in your water, the cause may involve several factors, including the home’s plumbing system, water source, water heater, or water quality.
A plumber can help determine whether the issue is related to your pipes or another part of the plumbing system.
Can PEX and Copper Be Used Together?
Yes.
Many homes contain a combination of copper and PEX piping.
For example, a plumber may repair or renovate an older home with existing copper plumbing by transitioning to PEX for new plumbing runs.
Approved transition fittings allow the two materials to be safely connected when installed correctly.
This means homeowners do not necessarily need to replace every copper pipe simply because PEX is being added during a renovation.
Which Is Better: PEX or Copper?
There isn’t one answer that is right for every home.
PEX may be a good choice if you want:
● A more affordable piping option
● Faster installation
● Flexible plumbing runs
● Fewer fittings
● Resistance to corrosion
Copper may be a good choice if you want:
● A traditional plumbing material
● Excellent durability
● Rigid, exposed piping
● Resistance to UV exposure
● A material with a long history of residential use
In some homes, the best solution may involve using both.
Should You Replace Existing Copper With PEX?
If your existing copper plumbing is in good condition, there may be no reason to replace it simply because PEX is available.
However, replacement may be worth considering if you’re experiencing repeated pinhole leaks, extensive corrosion, major renovations, or problems involving older plumbing.
A plumber can inspect the system and help determine whether repairing a section or repiping a larger portion of the home makes more sense.
Planning a Plumbing Renovation in Belleville?
Choosing the right piping material is an important part of any plumbing renovation.
At Belleville Pro Plumbing, we can assess your existing plumbing system and help determine whether PEX, copper, or a combination of the two is appropriate for your project.
Whether you’re renovating a bathroom, updating a kitchen, replacing aging water lines, or completing a larger plumbing renovation, proper installation is just as important as choosing the right material.
Belleville Pro Plumbing proudly serves homeowners throughout Belleville and the Quinte region.
Contact us today to discuss your plumbing renovation, pipe replacement, or repair.