Pex vs. Copper Pipes
What to consider:
Copper has long been the standard in residential pipe systems, but Pex pipes are growing in popularity, and for good reason. Pex pipes are flexible, hold up extremely well to constant water use and are
more resistant to freezing or bursting.
Pex pipes can be installed quickly with fewer connections and fittings. It uses a manifold system up in the attic, or a utility closet, so to repair a leak simply shut off the water to that area of the house - no need to shut down the entire house. Pex pipes cannot be used outside, but can be used with metal or PVC piping.
Copper has natural attributes that make it a great choice for plumbing. It is resistant to bacterial growth, resists corrosion and can be used outside. Copper is safer in a natural disaster or fire and is recyclable.
But, one of the biggest advantages Pex has over copper is price - copper can cost 3 times as much as Pex.
And speaking of cost...
What about PVC?
Jim really likes PVC. Many think that their inexpensive price means they
won't last that long, but that really isn't the case. He wouldn't have a problem having his house plumbed with PVC pipe.