What is the difference between copper and PEX?
Copper is rigid metal pipe, joined with soldered or pressed fittings. It has been used in homes for generations. PEX is flexible plastic pipe (cross-linked polyethylene) that comes in long coils and is joined with mechanical fittings. We install Uponor PEX.
How do they compare?
- Cost. PEX usually costs less. The material is cheaper and it installs faster.
- Opening walls. PEX bends, so it can be pulled through walls and around corners with fewer openings. Copper needs more access for each joint.
- Joints. A PEX run has far fewer joints hidden in walls, and joints are where leaks start.
- Track record. Copper has the longer history in homes.
- Sunlight. PEX must not be left in direct sun. Copper is used where pipe is exposed outdoors.
- Water chemistry. Copper can pit and pinhole over decades. PEX does not corrode.
- Noise. PEX is quieter. It does not bang the way rigid pipe can.
- Time on site. A PEX repipe is usually quicker.
Which do plumbers recommend?
It depends on the house. For a finished, lived-in home where you want fewer holes in the walls and a lower price, PEX is often the better fit. Where pipe is exposed, in a garage, outdoors or at the water heater, copper is used. Many repipes use both: PEX through the walls and copper at the exposed ends. We look at your home and tell you plainly what we would do.
Is PEX allowed in California?
Yes. PEX is an approved water pipe under the California Plumbing Code. When the job needs a permit, we pull it, and the work is inspected.
Does the choice change the warranty?
No. Our own work has a five-year workmanship warranty with either material. The pipe makers have their own product warranties on top.
How do I get both prices?
Ask. We give free written estimates and will price a repipe in copper, in PEX, or both, so you can compare the same job side by side.
Who is Friendly Services?
A family-owned plumbing company with over 20 years in Hayward. License CSLB #1156315 (C-36 plumbing), $1M general liability cover and workers' comp. Our own work has a five-year workmanship warranty, and we have 100+ five-star reviews online.