4. Make sure the first board is install level. VERY important as all the rest of the boards will reference this first board.
5. Start staggering your board early as if you were installing flooring. I start with a scrap and measure and cut the remaining board to complete the run.
6. I also apply small amounts of construction adhesive on the back of every board before using a brad nailer on an angle to fasten the board to a stud (which me marked previously)
7. For the outside corner, make sure to tap the boards as you go to create a flush and plumb face for fastening the trim later.