Filling gap between window and stud wall

[danbmb]

Hi all, bit of a funny one.

I live in a converted warehouse, which is full of very rough and ready approaches to building/finishing. I'm attempting to smooth over a lot of these over time, and this is one of the big ones.

There are two units, back to back, that have the dividing wall build across a disused window (I know). It's a stud partition that is cut roughly to shape. However, it actually has a gap that goes through to next door due to not being sealed in any way, which obviously means there's no sound insulation whatsoever.

Here's a couple of images:

Untitled

• danbmb
• 6 Sep 2012
• 2

Untitled

• danbmb
• 6 Sep 2012
• 2

I effectively need to find a way to seal the gap effectively. Beauty of finish isn't the main issue as you might imagine, I just need to not hear my neighbor's heavy breathing any more.

First thoughts were expanding foam, but I'm a bit worried it might crack the window (is this right? it's a hollow wall, so it could expand in every direction, and wouldn't need to push that way).

Any help much appreciated.
Dan

 

[roy c]

Why dont you build a wooden frame over the window, attach some plasterboard to it put some polystyrene on to the plaster board then put some more plaster board on to that,fill and tape around edges then skim it with finish.

 

[roy c]

Why dont you build a wooden frame over the window, attach some plasterboard to it put some polystyrene on to the plaster board then put some more plaster board on to that,fill and tape around edges then skim it with finish.

Or put a wooden frame up and put some ply or mdf over it.