Depending on the frequency range in question, the options for treating airborne noise from below can be limited. Whether the structure is of wood or concrete, adding resilience will be the best option to counteract the mass and rigidity of the ceiling.
In order of highest to lowest performing
Decoupling will always provide superior isolation over all other methods or products. This is especially true in ceilings where most products have little to no effect. The most efficient way to decouple your ceiling in terms of installation and minimal head room loss is with the GenieClip™ RST. With this option, we strongly recommend removing existing drywall and attaching the GenieClips™ RST directly to the joists for maximum performance. View the GenieClip™ RST.
Damping With Decoupling
While Green Glue Compound has limited value in a fixed drywall ceiling, on resilient clips or resilient channel, the addition of Green Glue Compound is significant. This is because damping compounds, like Green Glue Compound, are efficient when in resilient assemblies that allow the drywall to flex, thus allowing the Green Glue Compound to shear and work as intended. View Green Glue Compound tubes or Green Glue Compound pails.
Green Glue Compound on a fixed drywall ceiling will provide benefit only to airborne noise isolation. The high performance of Green Glue Compound in walls does not translate as well in ceilings. The gains in mid to high frequency ranges will be noticeable, but not significant. While the gains in low frequency isolation will not be noticeable. View Green Glue Compound tubes or Green Glue Compound pails.
Mass Loaded Vinyl
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 in relation to the other materials in the ceiling structure 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.