I'm going to tart up a small brick, wood and tin outbuilding so I can put a running machine in there. I am thinking of pine wall cladding on the walls It's really cold in winter.... I know I'll have to use dry lining paper beind the cladding, but can I use insulation boards too, cut to fit between the batons?
Yes. Fit Insulation boards which cuts easy and mastic / tape joins. Need to make air tight. Loads on YouTube and just use some 25mm insulation and keep cost down imo. Seems so many opinions and ways / products. Just pick a how to and follow.