Copper vs. PEX pipes: what homeowners should know
If you're facing a repipe decision, understanding the real differences between these two materials helps you ask better questions — not just take our word for it.
Copper: the traditional standard
Copper has been the standard for decades thanks to its durability and heat tolerance. Its main long-term vulnerability is corrosion, especially in areas with certain water chemistry, which is the leading cause of slab leaks in older homes.
PEX: the modern alternative
PEX (cross-linked polyethylene) doesn't corrode the way copper does, flexes to route around obstacles with fewer joints, and has become the standard in new residential construction.
Where copper still has an edge
Copper has a long, proven track record, natural resistance to UV and rodents in exposed applications, and some homeowners simply prefer it for that reason.
What actually matters for your decision
Your home's specific leak history, the age and condition of your current pipes, and your long-term plans for the property all matter more than a generic 'which is better' debate.
You might also be wondering
Modern PEX is certified for potable water and doesn't meaningfully affect taste for most homeowners.
Yes, this is common in reroutes and partial repipes, using approved transition fittings between the two materials.
Think this applies to your home?
Let's get you a real answer, not more guessing.