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!
 
Normally, in the ceiling, you just put plastic, then strapping directly, and run the pipes between the strapping and the plastic.
 
if you have glesen "Stående" then you should have the plasterboards standing, otherwise there's a risk you miss every other screw :)
 
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