I think this is what your after
http://www.ebay.co.uk/itm/Upvc-Door-Handle-Lever-Fixed-Pad-220mm-Plate-122mm-Fix-92mm-PzGold-White-Silver-/330820057016
The door will only close on the latch from the outside and wont be fully locked as there is no way of lifting the handle to engage the...
Ecopane/low e should be on the inside, does not make a difference regarding Lami inside or out when it comes to sound proofing....was triple glazed an option?
It's a door-stop composite door sold through Yale, we have sold hundred's of these door's so i would recommend removing the screws from the frame side
as that part of the hinge is one piece, the half that is attached to the door sash is multiple parts and is also set up for your door to work...
Get the company owner around with a fitter/s and demand they remove the trim on the leaking windows for an external inspection and see what shows up. Is the company a member of any double glazing ombudsman?
Try these http://www.evolutionwindows.com/news/evolution-flush.aspx
The problem with resi 9 windows is any pvc fabricator if they want to can fabricate it so quality is going to be varying, we have fitted a few jobs and it does look good but with Evolution windows they are the only fabricator...
This is what your looking for http://www.easylocks.co.uk/era-ilock-fx1-electronic-fingerprint-lock-for-multipoint-locks-biometric-readers-p-4797.html
But it need's to be used with a multi point lock which most pvc door's come with now a days.
First thing you need to do is fill those extra drainage holes you added ASAP, they are in the WRONG channels!!! All they are doing is filling up the frame with water and quite possibly running down your cavity and can cause much bigger problems.