uPVC windows can be a real pain if you can’t get them open. The window handle gearbox can break (which is often the case). Or, the shoot bolt (espag or espagnolette) and roller cams (mushrooms) jam or seize. When the gearbox breaks, it doesn’t allow the shoot bolts and the roller cams to return to the open position, and the window won’t open.
How on earth do you open the window, I just can’t get access to the mechanism?
The video above explains how to get the window open and what you can do to solve the issue…
The main thing when ordering parts, is to compare the new part with the original. New parts may get modified as they improve and evolve (you would hope), but some key things should stay the same. For instance, the size and position of fixing holes (the part has to fit in the original position and the fixing holes need to be the same).
So, measure the size of your old parts, the position of fixing holes and the type of connections (how the other window parts may attach to the replacement part).
When ordering gearboxes, you will often see quoted “A 9.5mm, or 11.5mm latch and 20mm, or 22mm backset is available”. The image below gives an example of a 11.5mm latch with a 22mm backset. Therefore take care when measuring these particular sizes.
Ordering Parts – Examples of What You Can Buy:
Can be found on this page: How to Open a Jammed, Stuck, or Seized uPVC Window: (Opens in a new window / tab)