"Sill" insulation interior wall

[Sargen]

I'm going to partition a living room here at home to create an additional bedroom. I have most of it figured out, but I'm a bit unsure whether (and if so, what) I should place between the existing floor and the joist I screw into the floor.

The floor is a 28 mm spruce floor on a chipboard subfloor.

I have the following at home that is lying around. Could it be suitable – I'm thinking the purpose is the extra soundproofing one gets.

 

[Jonatan79]

Normally, there is nothing under the stud closest to the floor. Soundproofing should be in the wall, it is of no use underneath.

 

[Nytt_användarnamn_2024_12]

I am going to divide a living room here at home so that we get another bedroom. I have most of it figured out but am a bit unsure about whether (and if so, what) I should have between the existing floor and the stud I am attaching to the floor.

The floor is a 28 mm pine floor laid on a chipboard.

I have the following at home lying around. Could it be suitable – I think the purpose is the additional soundproofing you get.

You are thinking correctly, you should always have something between the sill and the wooden floor to avoid movement noise, alternatively screw-glue the stud to the wooden floor but then you lock the floor's movements more…
Foam works excellently.

 

[Anonymiserad 405730]

I'm planning to divide a living room here at home so that we get an additional bedroom. I have most of it figured out, but I'm a bit unsure whether (and if so, what) I should have between the existing floor and the stud I screw into the floor.

The floor is a 28 mm pine floor laid on a subfloor panel.

I have the following at home that's lying around. Could it be suitable for the purpose – I'm thinking that the aim is the extra soundproofing you get.

One typically doesn't place a wooden sole directly against a wooden floor without gluing in between to avoid movement noise… But foam probably works well in combination with screwing the sole, so it should be fine…