How to adjust (tighten) a window?

[pinheadplanet]

Is there any way I can tighten this window as it is noisy and therefore I guess it is letting in cold air. I can't see any sort of adjusters like you may get on a door.
Thanks

Untitled

• pinheadplanet
• 26 Nov 2014
• 1

Untitled

• pinheadplanet
• 26 Nov 2014
• 1

Untitled

• pinheadplanet
• 26 Nov 2014
• 1

 

[crank39]

Unfortunately not, from those photos it looks like its a 'saracen' make of locking system, should say on that centre black plastic frame keep, think the only course of action would be to replace the white gasket for a slightly thicker one

 

[pinheadplanet]

Unfortunately not, from those photos it looks like its a 'saracen' make of locking system, should say on that centre black plastic frame keep, think the only course of action would be to replace the white gasket for a slightly thicker one

Can't see 'Saracen' anywhere (but that doesn't mean it isn't there). I was thinking of changing the seal. At the moment I have double plastic coated foam seals ie one on the window and one on the frame. This is about 6mm and the thickest one I can find on FleaBay is this

http://www.ebay.co.uk/itm/R667992W-...727?pt=LH_DefaultDomain_3&hash=item4d04f3071f

it's 5.5mm thick.

Are there other variants available?
Cheers