Erect interior wall between roof trusses on upper floor, how to do?

[jonas_720]

Hello,
I'm remodeling the upper floor of our 1.5-story house.
I've torn down what was there before, but now I've hit a snag.
I need to put up a wall, and it will be situated between two rafters, what should I do?
Should I frame along the length between the rafters, or how should I do it?
Or do I have to adjust the interior walls to the placement of the rafters?

Thanks in advance!

 

[Rickard.]

It is sufficient to attach the inner wall to the ceiling if there is a sparse panel, raw planks, or similar material between the rafters.

 

[jonas_720]

You only need to attach the inner wall to the ceiling if there is a grid panel, rough-sawn timber, or similar material between the roof trusses.

Hi!
Thanks for the quick response.
Between the roof trusses, there is only insulation and plastic, so nothing to attach any studs to.
I could perhaps put OSB between, would that work?

 

[Rickard.]

How are you planning to finish the ceiling then? There are many options, but I don't think OSB is the best, even if it's probably sufficient in many cases.

 

[jonas_720]

How were you planning to finish the ceiling then? There are many options, but I don't think OSB is the best even though it might suffice in many cases.

The idea was to nail paneling and attach it to the roof trusses, as it was before.
But in the space with the problem, we're going to have a bathroom, so we probably need to put some plastic matting a bit up on the sloped ceiling, I thought.
You never know which direction the kids will spray with the shower in the bathtub

 

[jonas_720]

The idea was to nail paneling and attach it to the roof trusses, as it has been done before. But in the space where the problem is, we are going to have a bathroom, so I probably need to put some vinyl flooring a bit up on the sloping roof, I thought. You never know which way the kids will spray with the shower in the bathtub

To clarify it a bit, I am attaching a picture; the partition wall should be where the red line is.

 

[epw]

The easiest thing is probably to nail up the panel and attach the wall to it. Possibly add kortlar between the rafters, but that shouldn't be necessary.

 

[Gukken]

Usually, you would install sparse paneling c300 or similar on the rafters and then the surface layer on the sparse paneling. That way, there are fewer punctures in the vapor barrier too!

Otherwise, it will probably work perfectly fine to attach the wall to the paneling.

If it's a wet room where you will have a plastic mat or another moisture barrier, I would use battens or use sparse paneling.

 

[jonas_720]

Usually, you put sparse panel c300 or similar on the roof trusses and then the top layer on the sparse panel. That also results in fewer punctures in the vapor barrier!

But otherwise, it would probably work perfectly fine to attach the wall to the panel.

If it's a wet room where you're going to have a plastic mat or other moisture barrier, I would cross-lath or use a sparse panel.

Thanks for your response.
But if I put a sparse panel, it will be lying, and since the panel should be horizontal, won't that be a bit odd when mounting it?

The best option seems to be to put the panel first and then screw the studs into it.
Does my idea of using OSB or plyfa between the roof trusses go completely away?