New window fitting- is this correct?

[mills705]

Hi all

 

Recently got a new front window fitted. 

Its a stone sill and is a false bay window with a canopy at the top which was also replaced. 

 

Essentially the bottom looks like it sits on the two edges as there is then a drop away in the stone? 

This gap has then been filled with a piece of plastic trim? 

[Redbeard]

You raise a valid issue, but I'd probably be just as worried about heat-loss via the window-board, unless you have checked and there's 75 - 100mm of PIR insulation in there. Most Oriel windows like this seem to have absolutely zilch that's insulative between the window-board and the outside world. In my experience uPVC window installers don't necessarily tend to be insulation or air-tightness specialists.

 

As far as you can tell, what is actually supporting the window-board (and the whole oriel window structure)?