I have 2 bathrooms that share a wall on our 2nd floor. Both have independent supply lines for hot and cold for each bathroom. One of the hot water supply lines was inoperable so I capped it and added a T from the other hot water supply as shown here:
Of course the hot water lines are on the outside of both sets of pipes and the sink drain in the middle. So, to be able to run the pex around the cold water supply and get it past the drain, it's resting against the cold water supply. As shown here:
Is this against code? Can these pipes be touching and resting against each other?
Best Answer
The only real issue is rattling noise due to vibration, or creaking due to thermal expansion. In this case, since one pipe is plastic, it's probably not a concern. I'd try to lighten the tension between them by flexing the plastic a bit, or place a rag between to act as a silencer. Be sure that by doing so you don't create a tight spot against the lumber, which can also cause noise.