Finally, the isolation products arrived on site, I can finally start!
Here are some snapshots of how I mounted 8cm and 18cm off mineral wool isolation material from Knauf insulation. The 8cm layer is put in between of the wooden roof structure. The 18cm is put in between the thick wooden beams. To support the isolation material, a metal stud frame is build in between the beams. Finally a vapor arresting shield was put into place.
jazzintheattic 