We had water leak between water tank and shower.....ended up replacing with PEX
We had a leak at the kitchen sink.....replaced with PEX
STILL had leak at kitchen sink.....discovered the spendy faucet we bought was leaking......when taken apart, the copper tubes were touching metal (causes a chemical reaction that causes holes).....replaced with new MOEN faucet....no more problems.
All problems occurred during different trips
DH stated if he had it to do over again, he'd have replaced EVERYTHING once and for all
:) :) I sat back and supervised