Huge gap above window

[Vera16]

For whatever reason (have parted company with builder so...) the window measurement was 10cm out and I have a huge gap under the lintel. I am considering the best way to fill this? The plus side is the window will not be very visible from the outside as it looks out onto a narrow passageway.

 

I am think of glueing a block of wood painted in the same colour and then foaming to fill the remaining space. Does this sound sensible?

 

 

[Mr Punter]

Can you just run a course of bricks under?

[Onoff]

You can get upvc extensions to go at the header like this:

 

https://www.ebay.co.uk/itm/362475908487

 

However...you really want to get the same make to ensure it clips in properly. 

[Vera16]

The window is actually aluminium-clad timber (Norssken).

[craig]

Timber head extension insulation between brick and extension, then attach some plasterboard and then finish it off, you wouldn't know it was there.

Edited December 8, 2022 by craig

[Vera16]

I am not familiar with the term ‘timber head extension insulation’. Is that a product? 

[craig]

I meant to say to a timber extension (packer) to the head (top) of the window, with insulation between that and the brick.