Hi, I am new to this forum, was looking for diy project and information for room insulation and got DIYnot. 
I do diy for what I need but my knowledge is little so every-time I do something, youtube and google!
Yesterday I decide to remove everything from my room so I can start an insulation, recuperation and decor project from scratch.
Now I am a bit lost, I want to get some material to insulate the main wall as below pictures, but I don't want to loose much space. Please can you give me some advise?
main wall is a cavity wall and is not cavity insulated, very cold ... >*
Also I am thinking to screw a thin plasterboard in the ceiling to make it smooth, would it be alright? or is against correct practices?
Hope is clear enough thank you guys!
I do diy for what I need but my knowledge is little so every-time I do something, youtube and google!
Yesterday I decide to remove everything from my room so I can start an insulation, recuperation and decor project from scratch.
Now I am a bit lost, I want to get some material to insulate the main wall as below pictures, but I don't want to loose much space. Please can you give me some advise?
main wall is a cavity wall and is not cavity insulated, very cold ... >*
Also I am thinking to screw a thin plasterboard in the ceiling to make it smooth, would it be alright? or is against correct practices?
Hope is clear enough thank you guys!
