Also a lot of tub spouts have installation methods that only work with copper stub outs.
Why can t you use pex for tub spout drop.
Use a drop ear bend support to hold the tubing in a tight bend right.
2 reasons i learned.
Copper would help give more support to the drop ear fitting and tub spout which is probably why they recommend it.
The interior diameter of pex is actually a fraction smaller than copper this forces water to come out of the shower at the same time as the tub spout.
Why can t you use pex for a tub spout.
Original poster 4 points 3 years ago.
Copper is the only professional installation material.
How did this project turn out.
I m certain they do not want you to use pex from the drop ear to the tub spot but you could probably use it between the faucet and drop ear.
A lot of manufacturers are very specific about this and i ve seen it hundreds of times.
You can connect a compression type shutoff valve to the one half inch copper stub out and then connect your fixture.
In areas that are concealed like under a kitchen sink or vanity cabinet you can eliminate a joint by running pex supply directly to the shutoff valve.