The light weight and natural resilience of walls allow them to respond well to added decoupling, damping, and vinyl. For the same reasons, including mass with any of these three upgrades is also more significant in walls than it would be in ceilings or floors.
In order of highest performing to lowest performing
Decoupling will always provide superior isolation over all other methods or products. The most efficient way to decouple your wall in terms of installation and square footage loss is with the GenieClip™ RST. With this option, we strongly recommend removing existing drywall and attaching the GenieClips™ RST directly to the studs for maximum performance. An alternative to the GenieClip™ RST is a double stud wall. However, to meet or exceed the performance of GenieClips™ RST, the double stud wall assembly will end up around 12” thick, about double the thickness of a GenieClip wall assembly. View the GenieClip™ RST.
Adding Green Glue Compound between two layers of drywall will provide significant gains in mid to high frequency isolation, as well as moderate gains in low frequency isolation. View Green Glue Compound tubes or Green Glue Compound pails.
Depending on expectations, mass loaded vinyl alone may be enough for your project. This material will not help with isolation of low frequencies, but will help resolve typical resonance issues found in common construction materials. Contrary to popular belief, the mass of the vinyl is insignificant, how the vinyl resonates differently than the other materials in the wall is what creates the value of the vinyl. View the TotalMass MLV.
Combining decoupling with damping will increase performance significantly. Mass loaded vinyl can also be used with Green Glue Compound if sandwiched between two layers of drywall. Sound tests of mass loaded vinyl in a resilient clip system show little to no gain.