Soundproofing - interior wall

[useless]

Because it was placed in the basement (about ten years ago by previous owners - we are going to tear everything out in a couple of years and do it right and properly).

I still don't understand why the wall has to move? Normally, walls should stay fixed without causing problems, right?

 

[RoAd]

david__ probably means that the wooden floor must be able to move without taking the wall with it.

Personally, I think that fear is unfounded.

 

[alexander___]

david__ probably means that the wooden floor needs to be able to move without taking the wall with it.

Personally, I think that fear is unfounded.

Yes, that's what I mean. The floor rises quite a lot during the summer months and settles during the winter months, so there is definitely something moving.

 

[claym]

@claym yes, was considering steel studs at first, but as you said; only a couple of years and everything else around is wood (which is wrong).

Another question: the only two air supply vents in the basement are in the room I'm now building a wall against. Should I put a vent in this new wall then? I have those fresh air vents left over from the last renovation that are used for exterior walls.

Yes, that could be an idea (I assume you want airflow and therefore want a vent in the wall?). Another option, which is simpler, is to leave the door open or have a gap under the door that allows air to pass through (e.g., skip the threshold and maybe cut the door at the bottom).

When I built a wall in my basement, I left a gap under the door (I also keep it open).

But what you need to think about regardless: will air come into the room that doesn't have a vent? I assume that room doesn't have any exhaust either?

If I were doing this construction, I would probably skip the vent in the new wall and leave the door open or cut the bottom of the door. All this because you will eventually redo things in the future.

Sorry if this answer is a bit messy. I'm coming up with things as I write...

 

[alexander___]

Yes, that could be a thought (I assume you want airflow and therefore want a vent in the wall?). Another alternative, which is simpler, is to leave the door open or have a gap under the door that allows air through (e.g., skip the threshold and maybe cut the bottom of the door)

When I built a wall in my basement, I left a gap under the door (also have it open)

but what you need to think about regardless: will air come into the room that doesn't have any vent? I assume that room doesn't have any exhaust air either?

If I were to do this construction, I would probably skip the vent in the new wall and let the door be open or cut the bottom of the door. All this because you will make changes in the future anyway.

Sorry if this answer is a bit messy. I come up with things while I'm writing ....

Thanks for the great answer! Isn't it better for soundproofing to go with a vent instead of a gap?

 

[claym]

Thanks for the good answer! Isn't it better for soundproofing to use a vent instead of a gap?

I don't know, if I had to guess it would be the same. Then again, one might wonder if there's much noise down there? If there is a lot of noise, does it matter if it spreads? I mean, it's a basement...

 

[alexander___]

I don't know, if I had to guess it's the same. Then you might wonder if there's much noise down there? If there were a lot of noise, does it matter if it spreads? I mean, it's a basement...

It's more that there's noise upstairs and sometimes we have guests sleeping down there.

 

[claym]

It's more about the noise upstairs and we sometimes have guests sleeping down there.

ahh ok. Then I think it's more likely the sound through the floor joists that will be the problem.

 

[Vrakersberg]

Hello! I am going to build an interior wall (wooden studs and plasterboard) with a door (between two rooms). However, I will not attach it to the floor as it needs to be able to move. I assume it is good to put some kind of material under the sill to dampen sound a bit. But what? Someone suggested regular sealing strip used for windows. But I don't know, so I'm asking you!

The most important thing is that it becomes airtight regarding sound insulation. If you build the wall so that there is a gap underneath, it might be tricky to get a rubber strip to seal completely tight. It's probably easier to stuff it generously with insulation and then seal it with acoustic caulk from both sides. Alternatively, use plaster compound under the entire depth of the wall. But if the wall is relatively small compared to the size of the door, the door itself, and any gaps around it, will greatly affect the overall sound insulation.