I'm hoping Durosity caught my invisible wink and knows I was kidding in the friendly banter we've built up on here.
If you look at http://www.lockcity.co.uk/wp-content/up ... 0/mech.jpg that is an example of UPVC door locks in the UK. They make up probably 50% of all doors, the rest being traditional wood with lever locks.
http://dclocksmithsrhuddlan.co.uk/resou ... 00x500.jpg is a Euro lock that goes in the matching shaped hole in the lock - these are interchangeable in seconds, and a Zwave unit would equally well work.
However, look at the fierce looking hook. There are up to five of those up the length of the door edge, and sometimes top and rear-edge as well.
They are flush inside the door when the door is unlocked. When locking the door, you lift the handle upwards to engage all those hooks for additional security. The key lock won't turn until the hooks are fully engaged.
That's the problem we have - Zwave can't lift the handle to engage the hooks.
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