Was it @Hovis who stripped back their kids wall and then battoned and insulated with really thin insulation boards?
Obviously more than 8mm and more. Invasive, but you can work out what benefit is expected.
It was. That room was above an unheated room with a couple of external walls, so probably justified in doing it.
@Howard started
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Was it @Hovis who stripped back their kids wall and then battoned and insulated with really thin insulation boards?
Obviously more than 8mm and more. Invasive, but you can work out what benefit is expected.