I recently had new windows fitted, and the frames fell short in height in some areas of upto 30mm.
|-------------------| Brickwork | |about 30 mm of space |-------------------|Top of Frame | |
The way this was solved, was on the inside, the strip usually used to cover the mess around the edges of the window, another length of this was used to cover the hole.
On the outside, more pvc stuff, no idea what it is, but about 60mm high was used (glued/stuck to the frame to cover the gap). There was nothing inside this gap, does this matter?
Pre to this "patch" you could see straight in/out to/from the house, to give idea of a 30mm hight by about 1500mm "hole".
The gap was between the top of the frame and the brickwork.
What I mean, is should there be anything inside this gap, or is this OK, or is it going to be a heat escape route, as well as a route in for the rain. I've read stuff about rubber foam etc...
All the other windows/doors fit perfect no problem.