Planning to put up an interior wall to create an extra children's room. I'll have OSB and drywall on both sides but am considering the studs. Initially, I thought of using 45x70, but then I heard that 45x45 would be sufficient. But how do you handle the electrical? It feels a bit weak to drill a hole for it in a 45x45, not much would be left then. How have others done it who have built with 45x45?
 
It works. The studs are significantly reinforced by the OSB board.
 
D Daniel 109 said:
It works. The studs are significantly reinforced by the OSB board.
Great, thanks!
Then I will probably go with that. What spacing (cc) should I use? I guess tighter than 60?
As you can understand, I'm a rookie at this....
 
60 is enough, don't forget to glue the OSBn
 
Glue is not needed. Insert insulation into the wall.
 
There's a big difference in stability with glue against the studs. Whether it's needed is a matter of definition :) some are satisfied with an "ok" final result, while others want it to be perfect.
 
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Huddingebo
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I have an interior wall built with 45x45 studs with OSB and gypsum on both sides. That wall is solid and good. You can notice a difference compared to the bathroom wall, which is 45x70 on 45 cc with 15mm ply, but it doesn't feel flimsy or wobbling. As long as you screw the OSB as you should, no glue is needed. Also, use proper 13mm gypsum and not the 6mm variant. That affects the rigidity as well.
 
M maverik said:
There is a big difference in stability with glue on the studs. Whether it's needed is a matter of definition :) some are satisfied with an "ok" final result, while others want it perfect.
What kind of glue should I use? Something special? Do I put it on the sides of the studs before I lift up the OSB and screw it in place, or how should I proceed?
 
Janus82 Janus82 said:
I have an interior wall made of 45x45 studs with OSB and plasterboard on both sides. That wall is sturdy and nice. You can definitely notice a difference compared to the bathroom wall which is 45x70 on cc 45 with 15mm plywood, but it doesn't feel weak or flimsy. As long as you screw the OSB in as you're supposed to, no glue is needed. Also, use proper 13mm plasterboard and not the 6mm variant. That also affects the sturdiness quite a bit.
What does "as you're supposed to" mean? Specific spacing between the screws or anything else I should consider?
 
A Annalundqvist said:
What kind of glue should I use? Anything specific? Do I apply it to the sides of the studs before I lift up the OSB and screw it in place, or how should I proceed?
M maverik said:
There is a big difference in stability with glue against the studs. Whether it's necessary is a matter of definition :) Some are satisfied with an "okay" final result; others want it perfect.
By the way, what happens if the OSB "swells" if it's glued? i.e. movement due to moisture/temperature?? But it's still attached even if it's screwed, I think in any case… ??
 
M maverik said:
60 is enough, don't forget to glue the OSB
D Daniel 109 said:
Glue is not needed. Push insulation into the wall.
I was planning to have a sliding door recessed in the wall, so it becomes a bit difficult with insulation...
 
A Annalundqvist said:
Had planned to have a sliding door recessed in the wall, so insulation is a bit tricky...
Then you'll have to check if a pocket camera really fits in a 45mm wall. I find it a bit difficult to see that actually.
 
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Annalundqvist
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A Annalundqvist said:
What does "as it should" mean? Is there a specific spacing between the screws or something else I should consider?
I have always screwed my boards (both OSB and gypsum) with centers of about 20-30 cm. I quickly googled and saw that Gunnebo claims that according to Hus AMA, you should screw OSB with 15cm centers on the edges and 30cm centers in the middle of the board. I may have been a bit sloppy before, but the house still stands. :)
I might be saved by using 55mm gypsum screws that go through the OSB and attach to the stud.

R Robin Wahlman said:
Then you probably need to check if a pocket camera really fits in a 45mm wall. I find it a bit hard to see that, actually.
You will not get a pocket frame in a 45mm wall. I have a sliding door to the kitchen and if I remember correctly, it requires 70-studs in the wall for it to work.
 
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Wadelö
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Janus82 Janus82 said:
I have always screwed my boards (both OSB and drywall) with a spacing of about 20-30 cm. I just quickly googled and saw that Gunnebo claims that according to Hus AMA, OSB should be screwed with a spacing of 15 cm on the edges and 30 cm in the middle of the board. I may have been a bit careless before, but the house is still standing. :)
I might be saved by using 55mm drywall screws that go through the OSB and secure into the studs.


You won't be able to fit a pocket frame in a 45mm wall. I have a sliding door to the kitchen, and if I recall correctly, you need 70mm studs in the wall for it to work.
Oh thanks for the answer!! So I need 45x70 studs and a door frame for a wall width of 122 if I want to fit OSB and drywall on both sides? Since there is no insulation there, I think it would be weak with just drywall, but I might be wrong?
 
I think, with an emphasis on *think*, that you should choose a pocket frame for a wall width of 96mm. The pocket frame I used accounted for attaching only one plasterboard on the outside of the pocket frame, and it is with this plasterboard that the finished measurement becomes 96mm.

I wanted to use a plywood board first to have the option to mount something on the wall where the door is hidden, even if it means using short screws. Additionally, the pocket frame is a bit flimsy, so it's nice to reinforce it with a plywood board at the bottom. When doing it this way, you need to add the width of the outermost plasterboards to the specified thickness of the frame, resulting in 96+13+13=122.

Check the installation instructions for the pocket frame you want to buy and think a bit about how it's constructed. I believe that the frame which is 122mm thick only has more air beside the door and doesn't offer better opportunities to mount an extra wooden board before the plasterboard. But I could be wrong.
 
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