Door Lining Choice?

[rednaxela]

Hello All,

I have a 100mm blockwork wall that I need to put a door liner into.
I'm semi-self building.

At B&Q, they had two versions 108mm and 131mm.

This really confused me as to what I would need. My plasterer told me to allow 10-12mm for depth on electrical sockets etc, so do I need 100+12+12mm = 124mm thickness = 131mm liner and then trim, or have I got completely the wrong end of the stick

any advice would be lovely,
thanks, Alex.

 

[masona]

No, fit the 131mm lining and the plasterer will plaster flush to the lining and when you fit the architrave you won't notice anyway.

 

[rednaxela]

thanks for your help masona.
Alex.