I want to build an interior wall with a door, I have bought a door and made a sketch, calculated materials and tried to read online, I am thinking of a wooden frame, since I am a bit of a novice on this project I have a couple of questions if someone has the opportunity to give some advice.
1. Can the top plate consist of 2 studs? (Mostly for material transport)
2. There is a wooden floor from the 70s, is it okay to just drive wood screws through the sole plate, read about tape being placed underneath otherwise, does it work?
3. The side walls are plastered, do I need to find studs (they are not in line with each other)? Or should I use some type of plug and screw for plasterboard?
4. The ceiling is an older wood ceiling, do I need to find studs (they are not in line with the wall studs) or do wood screws work?
5. Is it best to toenail 4 nails into each stud?
Thanks in advance!