I will insulate with 170mm between the rafters (sloped roof), put plastic on that and then a crossing 45mm, insulation there, then battens and plasterboard on that. Some electrical conduits will need to pass by and my question is whether I can place the conduits along the battens, as there is some space there and you avoid cutting into the insulation, or should I place the conduits in the 45mm instead?
A follow-up question is which direction I should install the plasterboards if the battens are vertical (rafters vertical, horizontal 45mm, vertical battens). With cc30, there will be a lot to screw into regardless of how you install the plasterboards.
Thanks in advance!