Hi, I'm trying to fix a door restrictor to a uPVC patio door. Attaching the
part that goes into the door's 16mm 'Euro groove' is fine. But when I try
to attach the other part to the doorframe (underside of top, near-ish to
corner) I'm having problems: when I drill a pilot hole (for the special uPVC
screws) I hit metal behind the uPVC.
I presume I'm hitting reinforcing metal inside the doorframe. Unfortunately
I don't have much flexibility in being able to use a different position
(further from corner).
Any suggestion on how to get round this gratefully received.