Revisions log for question
What vapor barrier option to choose for the roof?

We would like to build a wooden frame house in a vapor permeable construction. Now we have a proposal with different options for roof construction or vapor barrier performance. Can anyone here give an assessment of the advantages/disadvantages?

-roofing shingles.

-8 cm purlins / counter purlins

-7 cm soft fibreboards

— 20 cm rafters with wood-fiber insulation

-foil insulation

-grids / counter grids

-gypsum board

-wallpaper/plasterboard

This is a construction in an occupied attic. In the attic, OSB is used as a vapor barrier for the brake itself, stiffening and sheathing.

As an alternative for the residential attic, I have been offered a heavy paper/cardboard vapor barrier with fabric (Pro Clima) or OSB boards. What should I think of this?

• roof
• vapor barier