u/Sad_Owl7124

Got a couple brick walls I’m fixing plasterboard to with foam grab adhesive. The inside face of an insulated cavity wall.

Had planned for plain old 12.5mm gypsum boards however my local supplier has insulated plasterboard that’s reasonably thin at 22mm. Consisting of 9.5mm plasterboard and 12.5mm EPS.

Sounds good in theory because the walls do get a little cold to touch in the winter and I don’t have space for anything much thicker.

At this thickness do you think it will make any noticeable difference or just a gimmick? Or getting to the real question would it be worth paying an extra £150 for?