Framing a non-load-bearing wall with 1 doorway.
Questions:
- Existing room has sheet rock on ceiling. Do I strip off the rock where the top plate attaches to the joists? Or do I just nail through the rock?
- Intersecting corners: one of the walls uses 2 studs separated with short pieces of 2x4 (effectively three 2x4's thick)? End of other wall has just one stud that nails into this 3-stud block?
- Door header: king stud and jack stud on either side of doorway? One top plate 2x4 at top of doorway? Will simply using a header made from two 2x4's over this plate with cripple studs above be sufficient? Overkill?
- Rough opening: what is the size of the rough opening for a 28-inch door? Every web site I looked at says "measure the door and frame". Isn't there a standard measurement (give or take shim space) for a door of this size?
Thanks,