Because I had to plumb a wall I had to sister the studs and that left me with two gaps in the corner like in the picture below. One corner is cement board(E) with existing cement board(D) , the other one is cement board(E) with existing drywall(D)
All the lumber is 2x4s:
D- existing drywall in one corner, the other similar corner has cement board
E -cement board that I am installing, not in place yet
B-existing stud not plumb so I had to sister it using the stud C
Stud C is 3/8" off from B's inner edge
If I am installing E (cement board) as in the picture I will have two issues here:
- no support for the corner edge of E; that edge will still be screwed to C.
- there will be this empty space between the cement board that I do not know if it is OK to leave
What is the recommended way to deal with this?