Does A Stomp Finish On A Ceiling Affect Acoustics?

A “stomp” or knockdown texture applied to a ceiling can affect acoustics by partially obstructing perforations in acoustic panels, which reduces their ability to absorb sound. In aluminum acoustic ceiling systems, applying a stomp finish directly onto perforated panels is not recommended because the compound may fill holes, decreasing the NRC rating. However, if a textured aesthetic is desired, consider using aluminum panels designed with raised textures or relief patterns that mimic stomp finishes without compromising perforations. Alternatively, apply the texture only to adjoining gypsum board areas, leaving dedicated aluminum acoustic panels clear. For a hybrid approach, install a secondary suspension grid: one layer for textured drywall panels with a stomp finish, and a parallel layer of perforated aluminum panels above with batt insulation. This dual-system preserves the aesthetic texture below while maintaining high acoustic performance above. Conduct acoustic testing on mock-ups to ensure desired NRC values are met. In conclusion, traditional stomp finishes can impair aluminum acoustic ceiling efficacy, but specialized panel designs and layered assemblies can achieve both texture and sound control.