triple glazed window company gone bust there draft in the window?

your discription is very vague.is the draft coming from a fixed panel or a opening window.sd has covered the outside frame but you mentioned rubber seals.that's what leads me to think that you mean a corner of a window opening is not seating against the rubber seal correctly.if this is the case then you will have to re adjust both hinges, top and bottom.this is something you cannot do yourself ,because the frame will have to be pre drilled (new holes)to adjust the hinges.what you could try is oiling the pivot points on the hinge.you most likely have to get someone in to undertake the hinge realighnment.

ozone
December 2011

Get to a diy store and get some flexible frame sealant, or upvc small gap adhesive filler, which would probably be better, depending on size of gap. Plus cartridge gun if you do not have one, total cost about £8 max. cheaper if you go to trade places. toolstation, screwfix etc

SD
December 2011