Hi,
>
> I think the part of the lock that is in the door frame is the strike
> or keep. Well, that part, in my uPVC door (possibly most), is a metal
> plate with a slot screwed on to the uPVC frame. Well one of the
> screws holding the strike at the top of the door is loose and will not
> tighten ? the screw just rotates. As a result the strike slips and the
> rod in the door sometimes will not pass into the strike. I can
> overcome this by pushing the strike back into position by hand.
> However, I have to tell visitors who have a key to door this if the
> door does not lock. So, Is there some material I can ?inject? into the
> current screw hold in the uPVC that will reduce the size of the hole
> and stay in place in the frame, thereby allowing me to tighten the
> screw and fix the strike? The same way one used to put splinters of
> wood and wood glue into oversize holes in wooden door frames.
I once repaired a loose hinge on a metal door frame in an office partition that was like that. The hinge screwed into a thread on the frame which was u/s.
I drilled both holes out & used a spring toggle.
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maybe you could use a pop rivet?