Author Topic: Ripping up uninsulated walls and adding Roxul rockboard 60 or other vs greenglue  (Read 4395 times)


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I have a condo with uninsulated walls... long story...contractor finally cut and sprayed insulation but it didnt do anything so I suspect it didn't spread well with the tiny holes that were cut. I can hear my neighbors talking through the walls at all times.  I purchased green glue to add some drywall to decrease noise.  However, would it be better to just add insulation(like Roxul rockboard 60)? Would that make for a better solution.  Any advice would be appreciated. Thank you.

Randy S

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As you have found out that adding insulation did not deliver that great of a reduction if any. The reason is because you still have all the hard connections and not enough mass. The green glue is a great compound and we use it alot in our systems, but in itself it is not enough either. You need to decouple from the structure and add barrier(mass / lb. per sqft. density). You can do a "Band-aid" approach by just adding MLV/psa with new 5/8" drywall and the green glue, however it will not deliver nearly the reduction you would achieve if you decouple with clips and channel(floating the wall).
Randy Sieg

Super Soundproofing Co
Ph. 760-752-3030