You really want the focus to be on the beautiful tile you've chosen -- I'd keep the other walls simple, a nice eggshell paint.

en.wikipedia.org

Shiplap is the building material everyone's talking about, thanks to Chip and Joanna Gaines of HGTV's Fixer Upper, who use it on pratically everything. ... A little light internet research reveals that shiplap is a kind of wooden board that's often used for constructing sheds, barns, and other rustic buildings.Jun 26, 2017 Is this really what you want in a bathroom I do not think so

if done right it looks good. just make sure to use proper primer/paint and good ventilation.

as for the tile, make sure the depths are equal or it could be a prob. What's going on the floor?

how are you doing the tile wall behind sink? just halfway and then ship lap above that?

once again,, very helpful advice matt. oh, and kind too.

“Real” ship lap was meant to repel water/moisture. If you install something resembling, but not with the right edge, it will not hold up in a bathroom. I tried..it swelled; it contracted; and every spring I had the painter come back to fill the cracks.

Maybe helpful:

http://thecraftsmanblog.com/no-joanna-thats-not-shiplap/

matt, sigh. c'mon, you really aren't that slow, are you? proper ventilation in the bathroom. go back and try and read it carefully. primer/paint AND proper ventilation.

Are you stalking me Matt? seems like you just love to personally attack my comments on numerous threads. better stop or " they'll say we're in love" .. Hannibal

3088,,ah, ok. so tile all the way to ceiling behind sink, and the shiplap on all the other walls? similar to the first pic I posted except tile behind the sink. I can't find a pic of what you're describing, But I like the idea.