paulsharvey
Elite Member
Copper, when we used it, which was pretty often 20+ years ago, was always sleeved under the slab. Around here, soil is always very acidic, but water is always very basic.I use PEX extensively. I particularly like the fact that it can freeze with no damage.
I had an old copper waterline from the barn out to a hydrant in the pasture. It was only buried 24" deep due to rock ledge. We rarely get 24" of frost here anymore but occasionally, the darn thing would freeze. The last time I had to dig it up to make repairs, I replaced the whole run with PEX. That was 8 years ago and it's frozen twice since then, but it thaws with no damage.
I used to be a fan of copper, and I still have no issue with it, but you can't make a justification for the price over pvc/cpvc. Galv, we only used in gas and air, but we did often repipe galv to copper or pvc.
For outside stuff, just run PVC, Sch-40, with the bell and sigot pipe, no issue. It's flexible enough to make gradual turns from well (or meter), to house or barn.