I am finishing a basement and had a question about hanging drywall on top of MLV (Mass loaded vinyl).
The basement I am finishing has MLV fastened to the ceiling joists.
I am getting ready to hang the drywall on the ceiling and I was wondering about if/what glue I can use.
Normally you can glue and screw the drywall To ceiling (i.e liquid nails and screws)
In the case of mass loaded vinyl what do I do? Can you use liquid nail? Should I use green-glue? Is there a special glue to use? Or do I not glue at all and maybe just add some extra screws.
Thanks guys!
Best Answer
If the MLV was not bonded to the joists, then there is no value in gluing the sheetrock to the MLV. Add extra screws if you like, but a standard screw pattern of 6 screws per joist will suffice. I know it is not part of your question, but RC-1 channel is a really cost effective way to add a lot of sound deadening to the ceiling in addition to the MLV, if it is done properly. It only lowers the ceiling an additional 1/2"-5/8"