double glazed windows: air leaking through between window and frame - where the window opens - not between frame & brick

I think it needs new gasket!!

New gasket required. Easily rectified... Just cut a bit of the existing gasket and take to a supplier or go to ebay and order a length for your windows. It's just a matter of clearing out the old gasket and replacing with the new. Not difficult to replace although sometimes you need to squirt a bit of window cleaner to help squeeze the gasket into the groove.

Depending on the style and age of the window there may be ofset rollers on the mechanism. You can adjust the compression ont the gasket by moving the rollers in or out. Generally it takes a 4mm allen-key. It would definitely be worth replacing the gasket also if they are quite old. Hope this helps. Greg ( PRO-FIT DOORS)

three possible reasons: 1, the window needs new gasket. 2, new beading is required. Or 3, the opening sash has warped and requires re-adjustment. If none of these work, then the solution would be to teplace the window.

It maybe that the hinges have worn or moved out of alignment, the rubber sill (black plastic) can perish over time, maybe you should consider putting this out on my builder under handyman and get some advise and quotes to repair, this shouldn't mean you need a new window! i hope this has helped Ian

It sounds like the opener has 'dropped' either because your hinges need replacing or refitting. Most of the time, the hinges will break or bend and need replacing. It is a fairly simple and affordable job to change the hinges and part of the service I offer at Framefix. It may be that the gasket has perished but more commonly it is the hinges that need replacing.

I would say that if there is a gap between the window opener and frame gasket that this is most likely down to the window hinges (friction stays). Once replaced with new ones the window will close tight against the gasket again.

Hi . The first thing you could try is to clean the friction stays, hinges and then spray any like WD 40 or furniture spray polish then slowly open and close the window , this will make the hinge slide easier and lock tighter into place . If this does not work it probably means a new hinge , it's always best to change both hinges . The other reason could be rubber seals , these rubbers are located around openings sashes and inside the sash where frame closes . I hope this is helpful and works for you . Many thanks K L Window doctor