"bob haller" wrote in message
...


Too bad that in colder climates where it's exposed to the cold, such as a
seasonal cabin, the PEX gets brittle after a few winters and starts
cracking
and splitting randomly, usually behind the most difficult to get at wall

I havent seen this, PEX appears to expand and contract better than
copper.

Where copper will split PEX just gives a little.

Although it shouldnt be left to freeeze for years, without
winterizing.

Do you blow out lines and fill with RV antifreeze, the non toxic type?

The Piping is designed to drain by gravity
You open all faucets above, and the drain at the lowest level just below the
water pump, and gravity does the rest.
All horizontal runs are just off the horizontal to avoid pooling areas.

It's not a question of PEX bursting because of water freezing in the pipe
It's a problem of PEX getting brittle from the cold
Unlike PEX, copper does NOT get brittle from the cold