Im building my home with air tight, breathable walls and roof, so the inside of my external walls is OSB sealed with air tightness tape on studs 600mm apart. Is it OK to space the battens for the plasterboard 600mm apart too? And in places where no service void is needed behind the plasterboard, can I attach straight to the OSB (to save a little space and cash)? If so how is best - screws through to the stud work or is there a recommended adhesive for plasterboard on OSB?
Thanks.