Door lining - what would you do?

[pilsbury]

I will soon be knocking a doorway through from the extension to the main house. The wall is a 9” solid wall. My thoughts are that when I have the hole cut and knocked through to just line this with 1/2” wood 9” wide.

Seem logical? Any suggestions on my simplistic take on it?

 

[Doggit]

Yup, get a ready made door lining set that's 32mm. Worst case, get the local woodyard to machine the right width for you.

 

[Gerrydelasel]

My thoughts are that when I have the hole cut and knocked through to just line this with 1/2” wood 9” wide.

Yep nothing wrong with making your own door frame if you can't buy the right off-the-shelf one. You can also use MDF.
1/2 inch is a bit thin to hang the door from, but you can glue additional wood behind where the hinges go.
https://burnleyhouse.wordpress.com/2016/11/17/lining-a-doorway-from-scratch/

 

[SFK]

Pilsbury,
As above, but when I can (if there is space) I double up the thickness of the wood with an extra blocks of wood (on the liner, in the space between liner and wall) where the hinges will be so that the hinge screws will have two thickness of wood to go through.
Hope that makes sense.
SFK

 

[foxhole]

Used 22mm mdf on mine but lining was over 300mm wide.