Help with wooden windows

[Rosspcs]

With the recent windy weather we have noticed that nearly all our windows are drafty at the bottom left hand corner on closer inspection it seems there is a small plastic wedge that is actually preventing the window from closing fully at the bottom the gap on some of the windows is over 5mm , can anyone tell me what the purpose of this wedge is and is the answer to trim it so the window can shut ?.

Thanks.

 

[MMUK]

They are normally to lift the sash so it locks correctly, assuming it is fitted at the bottom of the frame? Not really a good idea on timber windows, designed more for uPVC as plastic expands and contracts more. I'd quite happily remove them altogether on a timber window.

 

[blackrodd]

They are normally to lift the sash so it locks correctly, assuming it is fitted at the bottom of the frame? Not really a good idea on timber windows, designed more for uPVC as plastic expands and contracts more. I'd quite happily remove them altogether on a timber window.

I've always thought of them as a transit aid and to keep the window square whilst fitting as they are all pretty thin manufacture now, not like Boulton and Paul style from years ago. Take 'em out! i think they only clip in anyway so replacement is easy. Rodders