Moved into a newly built home recently. I went to change out the walk-in shower faucet and discovered that the tile contractor had omitted the grout behind the shower knob trim piece. They left 2 spacers in place as well. The cement behind the grout-less tiles seems normal from the little I can see. But there's no grout for about 8 linear inches of tile.
The trim plate was held on by two screws into the valve assembly. You can see they sealed around the trim piece with a very thin bit of caulk; there was also a sizable amount of grout piled up on the trim plate where it crossed the grout lines.
My question is, how bad is this? Can I reseat or replace the trim plate with a same-or-larger size, re-caulk the edge and be safe from leakage? Or is this a don't-use-the-shower-until-fixed situation?
We do have a warranty process with the builder, but due to other recent experience, I'm expecting it to take over a month unless I raise an unholy stink, so I'm wanting a lead on the urgency before I contact them.