Non adjustable upvc window?

[daggermark]

I have a window that closes too tight to the frame on the lock side, such that it requires quite a bit of force to push the handle down. It is clearly tighter on the lock side than the hinge side, by at least 1mm.

I was expecting to see a cam of some sort where I can adjust the lock pin depth, but it would seem the window in question has no adjustment option - the pins are on a metal strip mounted into a pre-cut recess.

I then thought about adjusting the keep position on the frame, but it seems this cannot be moved as it also fits exactly into a pre-cut recess.

Has anyone seen windows like this before? I am out of ideas, and thinking of unscrewing the keep, trimming 1mm off it with a hacksaw, and putting it back. Seems a bit much tho!

 

[footprints]

On some windows the "mushrooms" that locate in the latch plate can be rotated to get an offset on them.
A picture would help.

 

[daggermark]

One pic of the frame and one of the sash.

 

[footprints]

The mushroom catches I was thinking of usually have a slot or hex key recess, but worth trying a pair of pliers on the head to see if it rotates eccentrically.

 

[daggermark]

Yeah I was also hoping for a hex key... no joy with the pliers, they don't move.

 

[ronniecabers]

How long has it been too tight? You maybe able to pull the sash back in the hinges by unscrewing the sash and slightly adjusting the hinge position.

 

[daggermark]

Been too tight since I moved here tbh, don't think its changed. The edge brackets have got clear score marks where the pins struggle to slot home.