Fastening shiplap problem with extra wide corner boards
Original house has wide trim and corner boards. The trim is lain over the top of the shiplap, which in my opinion looks terrible with messy caulk at every gap. I'm putting in an addition and want to butt the shiplap to the corner boards and trim instead of overlay the trim.
The problem is that the extra wide trim doesn't allow the shiplap to reach the king studs or corner studs. Is it okay to just nail those ends to the 1/2 inch osb, or should there be additional nailers under the osb?