Reno, just saw your post.
#1. Doing it on the rough may be one answer if you dare to nail up a light box and think it will actually be in perfect center on the trim. I'm a little learious of doing that. I prefer to leave my wire in the wall and center it on the trim.

#2. Trying to get the plumber to change his vent pipe is like pulling bird teeth (normally ain't going to happen)

#3. When remoldeling neither of the above is an option

#4. A pancake box on a piece of metal stretched between studs might be alright when the wall is open, but again, not an option on remoldel work

Still think the plumbing code needs involved in this....

One more thing.. I'm talking about a light fixture that needs a box to mount with where the canopy is round and not one of those long 3 or 4 etc..bulb type
Thanks..Steve...

Last edited by sparkync; 09/17/09 10:41 PM.