Just upgraded a standard sliding door lock to a deadlock one.
The original holes on the were too far away to allow latching securely, I had to elongate the holes towards the edge of the door, using a small round file, this worked well.
i followed the installation instructions, all went well until I tried to deadlock the door, i had a problem being the only way to lock the door was to leave the key in place, making the door easily accessed.
after a lot of checking and taking the lock apart, i found out that you need to install the lock in the open position, I re installed the lock, it now works as intended, a deadlock😀
I just thought I would share this information for anyone else intending to install this lock.



It’s a Gainsborough Yarra Ridge deadlock sliding/patio lock.
