If you are planning to put shiplap on your ceiling, there's one material you should pick over any other that holds up best.

Just nail them together, and then caulk, paint and install ... I used a pair of 2x6 boards to wedge the cleats into position while I fastened them to the ceiling joists. While you’re installing ...

Painting the ceiling might feel like a big job ... dust sheet down and keep the edges close to the floor and skirting board. This is also a good time to tape up any light fixtures in the ceiling.