I am going to dry-line a bedroom because it is very cold in winter.
1) Do I put the insulation between the wall and the battens or between the battens and plasterboard?
2) Should the ivory or grey side of the plasterboard face the room?
3) I plan to use 25 mm expanded foam between the battens - or can you suggest anything more modern?
I assume that the existing walls are already plastered, in which case you could simplify the job by using insulated plasterboard. This has a layer of insulation foam bonded to the inside face and can be fixed to the existing wall with a universal building adhesive, avoiding the need for battens.
Skim coating with plaster is unnecessary if the joints are filled and the entire face is papered with a heavy duty plain lining paper.
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