Thanks for the replies, much appreciated!
The sun room itself is basically brick built upto approximately half way and then has single paned wooden framed windows running all the way around with a UPVC double glazed door on either side (if that makes sense!!). The whole house has had UPVC...
I have recently purchased a 1930's semi detached dwelling property which has not been touched internally or externally probably from the time it was built. The kitchen is absolutely tiny but is does however have a sun room at the rear which is entered via the rear kitchen door. My plan is to...