Question:vapor barrier and an under-roof screen? >>
Answer: they do not have the same effectiveness.
A vapor barrier is an installation that blocks condensation from inside the house. A sheet of kraft paper put on the insulation of the roof is enough to produce this insulation effect. The under-roof screen allows it to block infiltrations coming from outside the house. It is a material specially designed to resist the infiltration of water during bad weather. Creating a roofing screen requires much more know-how and does not fulfill the same function as the vapor barrier. The vapor barrier screen cannot therefore replace the roofing screen, but it can complement it. You too, send us your decoration questionInstall a window seal Our practical DIY videos