Threshold

We also took some time to caulk the gap between the threshold and the floor tiles. We had considered grouting the gap, but we decided to go with caulk since the materials were different, and there was likely to be a bit of movement between them (since the threshold isn't on the cement board). I was worried that the shiny caulk might look out of place next to the sanded grout, but in the end, it looked just fine.

Done