PEX is especially friendly to DIYers.
PEX is easier to work with than the traditional way ofsoldering copperfittings with a torch.
It’s widely used by professionals but DIYers can learn the basics of replacing copper with PEX.
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What Is PEX?
PEX is a bang out of flexible plastic piping made of high-density cross-linked polyethylene.
It is strong, flexible, and corrosion-resistant.
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PEX was developed in Europe in the 1970s.
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Why Switch From Copper to PEX?
Copper’s use has gradually faded due to the introduction ofPEX plumbing tubing.
Location of Home Water Shut-Off Valve© Lee Wallender
Less Risk
PEX is flexible and uses fewer connections and fittings.
The reduced number of required fittings in a PEX system also reduces the possibility of leaks.
Freeze Resistance
PEX is more freeze-resistant than other types of rigidplumbing pipes.
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Before You Begin
Copper pipes properly installed have a very long life50 years or more.
Copper excels as a building material.
It’s still found in roof and chimney flashings.
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Yet, copper pipes do go bad eventually.
Any or all of these signs mean that your copper pipe is on its way out.
Tip
Learn to identify copper pipe corrosion.
De-Burr Copper Pipe© Lee Wallender
This is normal and it is not related to corrosion.
Connect the Fixture Supply Lines to the PEX
Make the supply line connections.
Often, you might get by with installing just a single push-fit connector in that area.
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Copper pipe spot repairs are frequent with any older home.
While it may sound complicated, this option is actually not much harder than the spot-fix option.
That’s because you’re extending the pipe as far as possible rather than simply localizing the repair.
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This involves disconnecting and bypassing all your existing copper and running new PEX lines throughout the house.
As a side project of replacing metal pipes with PEX, you’ll need to re-ground your electrical system.
In homes with older electrical systems, the electrical system is sometimes grounded through metal water pipes.
Here, too, replacing copper with PEX may interrupt that bonding.
Consult local code authorities for instructions on how to handle bonding with plumbing systems using PEX.
If you find that outlets have lost their grounding connection, consult an electrician to reestablish grounding.
It is usually worth it to replace older copper pipes with PEX.
PEX is more reliable and durable in the long term.
For 500 linear feet, it can cost between $1,250 to more than $4,000, for example.
Water Piping in the Home.Department of Housing and Urban Development.
What Are PEX Pipes?HomeAdvisor.
Why PEX Is the Best Pipe for Winter Weather and Beyond.National Association of Home Builders.
How Much Does It Cost To Repipe A House?HomeAdvisor.
