mounbridge wrote:Hello,
I'm going to double my walls and don't know what to choose between the two solutions in my title
to know; which is the most reliable over time (I've heard thatafter a while the glass wool fell back down )
thank you for enlightening my lantern
+1; Glass wool like 10 cm thick bonded to kraft paper sags after a few years if it is not kept to a minimum (in line with its thickness).
At home, by dismantling a partition we could measure that the sagging of the glass wool was between 20 and 30 cm and thus created a beautiful thermal bridge over the entire upper periphery of the room.
A colleague seems to have solved the problem by laying this glass wool himself, but supporting it by growing stainless steel braking wire over a good part of the surface. By dismantling for modification about 25 years later, that had absolutely not changed.
