On 07/03/2019 19:32, Alan J. Wylie wrote:
Rob Morley writes:

On Wed, 06 Mar 2019 18:46:07 +0000
(Alan J. Wylie) wrote:

I found this sliding patio door lock fitted on the house I've just
bought.

https://rfvt.org.uk/tmp/apprentice.jpg

I wonder if it would otherwise be possible to lift the door out of its
track (and off a normally positioned bolt).

I had another look today, in between lifting p*ss soaked carpets and
removing huge amounts of television cable.The lock mechanism consists of
a substantial horizontal metal protuberance (I can't think of a better
word, I'm afraid) extending from the frame, into which a bolt slides
upwards to lock the door.

There is no way that the pin in the photo would provide any extra
protection against the door being lifted.


It stops it being lifted after they have snapped the euro cylinder.
They need a second lock on the bottom too to stop it sliding.

Of course the bottom one will do both jobs.