Plasterboard on wooden board

[evoline]

Hello,
Should drywall be attached to the studs like wood boards (OSB), or can you screw the drywall in just any way on the OSB?
I thought of screwing around the entire drywall and the middle of the board; then the screws only go through the studs that are against the ceiling (hammarband) and the floor (syll), not the vertical studs.
Drywalls are staggered.

Thanks in advance

 

[Avemo]

I think you reduce the risk of cracks if the joints in the plasterboard are offset against the OSB. The OSB board is much stronger than the plasterboard. So it holds up excellently even if the screws holding the plasterboard do not hit a stud.

 

[Discoman]

Hello,
Should drywall be fastened to the studs like wood panels (osb), or can you screw the drywall somewhat randomly onto the osb?
I thought about screwing around the entire drywall and the middle of the board, then the screws only go through the studs attached to the ceiling (top plate) and floor (sill), not the vertical studs.
Drywall panels are offset.

Thanks in advance

Good question. I didn't find anything on Swedish wood but asked chatgpt:

Short answer: You can screw the drywall directly into the OSB – but it's best to also hit the studs when possible.


Here's why:

✔ When it's enough to screw drywall into OSB​

• OSB provides a stable, load-bearing surface.
• Drywall screws hold well in OSB and have no issues.
• Many craftsmen do exactly that: OSB → drywall screwed only into OSB.
• A common recommendation is a tighter screw spacing, about 20–25 cm, since the drywall doesn't "self-support" as it would on a stud wall.

✔ When it's good to also hit the studs​

• If the wall will heavily load the drywall (e.g., heavy shelves, cabinets).
• If you want to reduce the risk of movement/cracks.
• At ceiling connections or where the wall may be subjected to impacts.
• For fire or sound-rated walls: the systems often require screws into studs according to specification.

My practical recommendation ("carpenter's version")​

• Screw the drywall primarily into OSB.
• But where the studs are – add a few screws there as well. Not a necessity, but it provides extra stability with minimal additional effort.

Source Gyproc, norgips, Swedish building practice (AMA), Derome

 

[evoline]

So it is not a requirement or a standard building rule, just something that is recommended if possible.

Thanks