Building interior wall - a couple of questions

[Daaaaaniel]

Planning to build interior walls for a closet.

I intend to use OSB boards to easily attach hooks, lights, and such without needing to use drywall anchors. On top will be 6mm gypsum. Planning to stud at 450mm centers.
Should the gypsum be staggered in relation to the OSB boards on the studs, i.e., overlapped?

Are 45*45mm studs sufficient? How big is the difference with 45*70mm?

I've read that the OSB boards and gypsum boards should be installed 5-10mm from the ceiling and floor. Is this correct? And why?

 

[Ola78]

Yes, you should have the joints offset and you should use 45*70 studs, 45*45 will be too weak and they risk being wobbly. The reason to set them 5-10 mm from the floor and ceiling is because the wooden boards and the floor need space to move depending on the humidity.

 

[Ola78]

You can visit any of the manufacturers of gips or insulation, they usually have good descriptions on how to build interior walls.

 

[Nimajneb]

Renovation plaster must not overlap

25mm

to allow clearance against ceiling and floor for both movement and potential future renovations.

 

[Daaaaaniel]

The wall being built meets another wall. Should I have a gap between the drywall and the other wall there as well, just like with the floor and ceiling?

What should I use to cover that gap? Latex?

 

[PCLarsson]

I should have left a small gap for OSB but placed the plasterboard directly against it.

Best regards,

/PC

 

[Nene]

If you want to save space, you can use 45x70 studs and rotate them 90 degrees. This also gives you more space for screw rows. Additionally, stable and good.