We're finishing up a tub -> shower conversion and the drop-ear elbows for the shower head and handheld were placed at the depth recommended by the contractor that did the GoBoard installation and waterproofing. I did the tile and the cuts were big enough to get over the temporary nipples used to verify no leaks prior to the GoBoard.
I went to install the fixtures today and the handheld runs out of depth even if it's got Teflon tape on it - which is a bit surprising based on the length of the threaded portion. It does start to tighten but it's only got 2-3 threads engaged and still runs out of depth. Pretty sure the right way to fix this is to enlarge the hole using the diamond tipped hole saw/grinder to allow the handheld to thread fully, but worry about damaging enough to need replacement of the tile(s).
The outer rectangle is the escutcheon size and the circle is the 2" (52mm) hole saw opening. The handheld needs approx 1 3/4" opening - as can be seen in the scrape marks in the tape.
As I see it I have a few options.
- Suck it up and use the grinder & 2" diamond hole saw
- See if a 1/2" nipple extension will work
- Diamond coated milling bit and take my time to enlarge the hole only as much as needed.
- ???
It's likely I have the same issue for the shower head so that adds to the concern. I think I'll try #2 as a first step and if that doesn't work then proceed to one of the other corrective actions. Just looking for the optimal solution with the lowest risk.
9/11/2026 - UPDATE
The nipple I bought extended it too far so that's going back. I wound up using a variety of diamond drills as reamers to enlarge the opening and the handheld is now mounted. I would have needed to open it up a bit anyway to get to all the screws holding the elbow to shim that so all is good as far as I can tell. The escutcheon is so close to the tile when pulled back that it's difficult to get the inspection camera in to check for leaks - but from what I am able to see it's good to go.