40mm gap to fill

[onionsa]

I was test fitting the personnel door in my workshop extension today and there is a 40mm gap that needs to be filled between the top of the frame and the lintel. I’m thinking I could either raise the door on something or fill the gap at the top.
Do lintels come in 40mm? What else could I use to fill this gap and secure the frame?

Thanks in advance.

 

[Tigercubrider]

A bit of timber and mortar on the outside?

 

[onionsa]

I was wondering about a bit of timber up top as there will be no weight on it, and then just expanding gapfill the remaining gap if there is any.

 

[23vc]

Expanding foam, then rake out the front inch and point it with mortar? Admittedly I’ve never done that, but it’ll definitely stick like s*** to the frame and lintel, and given you can plaster over it, you may get away with pointing over it.

 

[23vc]

Sorry, just seen you said 40mm, which makes my suggestion silly if it wasn’t already. Yeah go with timber.

 

[^woody^]

Whatever you like above the frame, but you will need a cover strip (architrave) to cover this and overlap the frame.

Frames are not fixed via the head, only the jambs.