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AcoustiClip Timber Joist Ceiling System
Ceiling Soundproofing

Premium timber joist ceiling soundproofing solution using the AcoustiClip System

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AcoustiClip Timber Joist Ceiling System




Airborne noise/Vibration noise


Airborne 64dB

Impact 54dB


Direct to ceiling joist


Competent DIY

Reasons to use the AcoustiClip Timber Joist Ceiling System

  • Soundproofing ceilings: Soundproof timber joist ceilings against noisy neighbours and insulate rooms requiring good sound insulation.
  • Superior Perfomance: The Acousticlip system offers the best level of sound reduction as it reduces airborne and vibration sounds from transferring between rooms.
  • Minimal space loss: It is applied directly to the ceiling to minimise the loss of space within the room.
  • Ease of fitting: The homeowner can install these systems if they have competent DIY skills.
  • Customer support: With extensive product knowledge, we can provide help and advice on all aspects of your soundproofing journey
  • Nationwide Delivery: Materials are delivered from stock, so there are no extended lead times.

Product information

  • System thickness 77mm (from the ceiling joist)
  • Fire one hour

Thermal Resistance R:

  • Acoustic plasterboard 12.5 mm = 0.050 m2 K/W
  • Acoustic plasterboard 15.0 mm = 0.060 m2 K/W
  • Mass-loaded vinyl 0.14 m² K/W
  • Acoustic insulation 2.90 W/mK

Thermal Conductivity λR:

  • Acoustic plasterboard 0.25 W/mK to BS EN 12524:2000
  • Mass-loaded vinyl 0.037 W/mK
  • Acoustic insulation 0.034 W/mK

Reaction to Fire

  • Acoustic plasterboard 12.5mm & 15mm Euroclass A2-s1, d0
  • Mass-loaded vinyl 10kg EN 13501-1 B-s2,d0 (2)
  • Acoustic insulation EN13501-1: A1

Materials supplied with this system:

  • Acoustic insulation 100mm/60kg/m3 – High-density sound insulation slabs
  • AcoustiClip – Sound isolation anti-vibration clip
  • AcoustiChannel – Metal furring channel 1800mm
  • Soundboard 15mm – High-density soundblock paperboard 1200mm x 1200mm (1.44sqm)
  • Noisestop 1 Plus Panel 18mm –  12.5mm soundboard laminated with 10kg mass-loaded vinyl 1200mm x 1200mm (1.44sqm)
  • Acoustic sealant 310ml

Select the required Total Ceiling Area from the dropdown box at the top of the page to see the quantities supplied with this system.

We recommend ordering areas individually and adding them to the basket rather than adding them to one large area. You can order multiple areas in the same order.

acousticlip timber joists componenets


Airborne Data

Untreated Ceiling Airborne DnT,w

18mm chipboard floor, 200mm joist and 12mm plasterboard ceiling 38db

Treated Ceiling Airborne DnT,w

AcoustiClip Timber Ceiling System 64dB

Improvement DnT,w

Noise reduction with treatment 26dB


Impact Data

Untreated Ceiling Impact LnT,w

18mm chipboard floor, 200mm joist and 12mm plasterboard ceiling 80dB

Treated Ceiling Impact LnT,w 

AcoustiClip Timber Ceiling System 54dB

Improvement LnT,w

Noise reduction with treatment 26dB

Note: Every 10 decibels(dB) reduction in noise level is roughly perceived as a halving of the perceived loudness. So, for instance, if you have a sound that measures 70dB and it decreases to 60dB, it would sound about half as loud to the human ear. Decibels Explained.

  • Remove the existing ceiling to expose the ceiling joist.
  • Fill the cavity between the joists with the 100mm DFM acoustic insulation slabs. If cut larger than the opening, the acoustic slabs will friction fit.
  • Screw the AcoustiClip into the ceiling joists. Space the clips across the joists to a maximum of 900mm (every other joist) and 150mm from the edge of the wall. The maximum space between the AcoustiChannel should be no more than 600mm (see the diagram below)
  • Clip the AcoustiChannel into the clips, join the lengths of the channel by overlapping them by 100mm and screwing them together with self-tapping or drywall screws.
  • Screw the 15mm soundboard into the AcoustChannel and then the Noisestop 1 Plus Panel 18mm over the top. Leave a 2-3mm gap around the ceiling’s perimeter to reduce noise transfer into the adjoining walls.
  • Acoustic sealant is applied between each of the acoustic panels and to the perimeter of the ceiling to ensure an airtight seal.
  • Finish the system the way you would finish standard plasterboard. The panels are supplied with tapered edges, which allows for dry lining or plastering.

Spacing the AcoustiClip & AcoustiChannel

  • Maximum 600mm centers between the AcoustiChannel
  • Maximum 900mm centres between AcoustiClips along the AcoustiChannel
  • Maximum 150mm from the centre of the AcoustiChannel and the wall
  • Ensure the end of the AcoustiChannel does not contact the wall

acousticlip and acoustichannel positioning for timber ceilings

Materials supplied with this system

Ceiling soundproofing FAQs

The best method of soundproofing a ceiling is to use a combination of products in a soundproof system.

Soundproof systems will add mass, increase sound absorption and decouple the existing structure from the new.

We recommend using the AcoustiClip system to soundproof your ceilings. The combination of materials supplied with the AcoustiClip Timber Ceiling System comprises all the required products to sound insulate the ceiling against impact and airborne sounds effectively.

The best-performing timber joist ceiling solution is the Acousticlip Timber Joist System.

The product combinations supplied with this system achieve a high level of noise reduction against airborne and impact sounds.

Timber joist ceilings will benefit from the AcoustiClip’s decoupling effect and the increased mass/density and sound absorption of soundproof panels and acoustic insulation.

The best-performing sound insulation system for concrete ceilings is the Acousticlip Concrete Ceiling System.

The product combinations supplied with this system achieve a high level of noise reduction against airborne and impact sounds.

Concrete ceilings will benefit from the AcoustiClip’s decoupling effect and the increased mass/density and sound absorption of soundproof panels and acoustic insulation.

Unless you have very high ceilings, you will probably need to remove the plasterboard or lathe and plaster to soundproof your ceiling effectively.

Removing the existing ceiling will allow you to use acoustic insulation inside the ceiling joist, which is a great way to add mass. Using the AcoustiClip system, you will decouple the ceiling, which isolates the joist from the new ceiling.

Removing the ceiling means you can use the AcoustiClip Timber Ceiling System, our recommended solution.

If you are using downlighters in your ceiling, you should fit acoustic/fire hoods over the lights to ensure the acoustic integrity of the ceiling.

Stopping impact sound through the floor above is difficult to stop from below. In an ideal world, you would soundproof the floors to stop the impact sound. If you can’t access the floor, the best solution is to install a ceiling isolated from the existing.

If you have very high ceilings, you could install a completely new ceiling with joists without connection to the existing ceiling. If this option does not apply, you must use a system that isolates the new ceiling even if it is in contact with the joist.

The best solution for achieving isolation is to use The AcoustiClip Timber Ceiling System.

Got a question?

If you need help or advice or would like to chat with us, please call 01423 339 163 or fill out this form. We’ll be in touch shortly.