This is for a 1 hour stc 50 requirement in a ceiling floor assembly. I have an existing building and a wood stud drop ceiling. Was going to specify 2 layers of type "x" over rc-1 Chanel at the drop ceiling, then roxul between the 2x6 studs at the floor structure above. Is this a good solution?
I can't find a similar ul for this type of assembly but figure 40+40 min for 2 layers of type x will cover me for over an hour. I think just 1 layer would have sufficed bu read in the gypsum association manual that if you said insulation to add another layer of type X.
I can't find a similar ul for this type of assembly but figure 40+40 min for 2 layers of type x will cover me for over an hour. I think just 1 layer would have sufficed bu read in the gypsum association manual that if you said insulation to add another layer of type X.