Adding mass to a wall helps. But if you have added a layer of acoustic board and the noise is still getting through at a level that is not much better, the problem is often not the wall itself — it is the structure. Sound travels not just through the air and through the surface you have treated, but around it: through floor joists, through wall studs, through the rigid connection between the plasterboard layer and the building frame. These are flanking paths, and they bypass the mass layer entirely.
Resilient clips and resilient channels break these paths. They mechanically isolate the plasterboard layer from the frame, so that structural vibration — noise that has entered the building frame — cannot travel directly through a rigid connection to the plasterboard surface. The clip or channel absorbs and interrupts the vibration path at every fixing point.
How resilient clips and channels work
Resilient channels (also called hat channels or sound isolation channels) are lightweight metal profiles that fix to the existing wall or ceiling frame. Plasterboard is then fixed to the channel — not to the stud or joist. The channel has a deliberately flexible profile that decouples the plasterboard from the structure at every fixing point.
Resilient clips (also called sound isolation clips or acoustic isolation clips) go further. They attach the channel to the frame via a rubber or neoprene isolator element, providing greater mechanical decoupling than a simple flexible channel. The clip absorbs vibrational energy that the channel alone might still transmit through its profile.
Both systems are used in wall and ceiling applications. Resilient clip systems typically outperform channel-only systems, particularly at low frequencies, because the isolator element provides a better mechanical break. The trade-off is greater installation depth and higher cost.
Installation disruption level: moderate to high. Resilient clip and channel systems require stripping back to the frame (or building a new frame), installing the clips and channel, fitting acoustic fill in the void, and re-boarding. This is a structural build operation — not a surface treatment. It delivers the highest achievable performance in a conventional building element, but it is a committed intervention.
Typical use cases
- Party wall improvement between flats — where an existing wall has already been treated with mass and performance has plateaued; decoupling breaks the flanking paths that mass alone cannot
- Ceiling isolation in multi-storey buildings — resilient clip ceiling systems are the most effective conventional approach to separating floors in terms of airborne and impact noise
- Home recording studio builds — purpose-built isolation systems using resilient clips achieve STC and IIC ratings sufficient for professional use without a full room-within-room construction
- Commercial fit-outs requiring high performance — meeting rooms, music practice rooms, medical consultation rooms where speech privacy or noise control standards must be met
- Renovation projects — resilient clip systems are specified in whole-house or whole-floor renovation programmes where the disruption cost of access is already being paid
Technical notes
Resilient clip and channel systems are evaluated by STC (Sound Transmission Class, US standard) and Rw (weighted sound reduction index, ISO standard). System-level test data — which includes the complete wall or ceiling assembly — is more useful for specification than individual component data. Full test reports for specific assemblies are available on request. For Part E compliance, performance must be assessed at the whole-separating-element level, and we can advise on assemblies that meet the required Dnt,w + Ctr values.
What's the difference between resilient clips and resilient channels?
Resilient channels are a one-piece metal profile fixed to the existing frame. The plasterboard is screwed to the channel, not to the stud. The channel's profile flexes slightly to decouple. They are lower cost and simpler to install, but provide less complete isolation — particularly at low frequencies where flanking paths are most stubborn.
Resilient clips introduce a separate rubber or neoprene isolator element at each fixing point. The clip mounts the channel (or a hat channel) away from the frame, with the isolator absorbing vibrational energy at the connection point. This provides a more complete mechanical break. Clip systems are specified when higher performance is required or when flanking through the frame is severe. For most residential party wall and ceiling improvement projects, clips are the appropriate choice. Channels are appropriate for lower-priority partitions where some performance gain is needed but the full disruption and cost of a clip system is not warranted.
If you are planning a wall or ceiling isolation project and want to understand which approach is appropriate for your situation, get in touch — we can advise based on your building type and noise problem.