c/c distance screws on OSB board?

[imported_Kalle_F]

I will soon start putting up the OSB boards that will go behind the drywall in our kitchen. I became unsure about how close the screws should be, searched a bit online but didn't find any info.
I assume someone here knows the situation

Thanks in advance!

/Kalle

 

[pbengtsson]

Along the edges 10-15cm, in the middle (if 120 board) 20-25cm.
I usually apply glue between the board and the stud as well. Why? Before OSB came, particle board was used and it was glued, so it probably just carried over.

 

[Johan Gunverth]

Along the edges 10-15cm, in the middle (if 120 board) 20-25cm.
I also usually apply glue between the board and the frame. Why? Before OSB came, chipboard was used and it was glued, so I guess it's just a leftover habit.

Chipboard is still glued. OSB moves, so it's questionable whether it should really be glued. Additionally, they are waxed and therefore regular wood glue doesn't work.

 

[jkarlberg]

why should you screw more tightly at the edges than in the middle?

 

[MB77]

Wood particles are still glued. OSB moves, so the question is whether it really should be glued. Additionally, they are waxed, so regular wood glue doesn't work.

OSB shouldn't be glued; there should be a small gap between the boards because they move.

 

[Johan Gunverth]

OSB should not be glued, there should be a small gap between the boards. Because they move.

That's about what I wrote.

 

[jkarlberg]

I didn't put a space between osb, what will happen?

 

[MB77]

Approximately what I wrote.

Yep, just a little clarification that they should NOT be glued

 

[chiz]

I use a 3" nail as a spacer between all OSB boards, just need to nail it so it stays in place but can easily be removed by hand later. This gives the right distance and also makes it easy to have something to press the board against to keep it straight.

What our Quality Manager said is that when you install OSB without spacing, and it moves, there will be cracks because the gypsum also moves then. I don't have firsthand experience with that myself though.

 

[pbengtsson]

I have very little experience with OSB, but I have glued with Sika Bond 500. This is because the panels are not meant to make it easier to hang things but to stiffen up the construction (renovation project). My OSB is screwed/glued directly to the standing studs in the outer walls, and then I continued on the inner walls as well.

I haven't heard that it's wrong to glue, but rather that today people build with horizontal 45x45, and OSB is more so you can hang things in it rather than being part of the frame, so glue doesn't add anything.

Then, due to ignorance, I also installed OSB without a gap , which directly causes problems as after 4-5 panels you start to miss the stud, but there are no cracks in the plasterboard. I've also examined the wall during different seasons to see if it bows when the panels expand but haven't seen any tendency towards this.

However, the walls do move, and in winter I have three joints where they bubble, these are filled with fiberglass tape and not the paper version (like all other plasterboard joints in the house). I think it's due to shear forces in the plasterboard joint (OSB also expands vertically).

A bit OT, sorry.