yes, both reasons. You usually tile a shower ceiling to prevent mold and it looks finished

Thanks for looking at our photos. In this case, the lower ceiling in the shower got a lot of splashing. The tile protects it. It's also necessary if you have a steam shower. Improperly ventilated showers can still mildew even if tiled. -J.S. Brown and Co.

what tile is used on the top half of the shower?

I love the small mosaic tile. How do I purchase that? Pretty please :)

Never mind you answered my question already. Thank you!