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Acoustic Hangers and Brackets

Diagram of Type C Acoustic Hanger attached to a ceiling

Isosonic Acoustic Hangers
When it comes to soundproofing a ceiling it is essential you consider both issues that need resolving: impact sound and airborne sound.

For those who are budget conscious, the ceiling hangers are an excellent choice in cases where you are able to lose 85mm-91mm (about 3 inches) of ceiling height. It is not an intrusive method of sound insulating your ceiling, as it is relatively mess free. This is because you usually retain your existing ceiling. This is particularly the case where you have existing lath and plaster ceilings and don't want the mess of removing the old ceiling.

The Acoustic Hanger is part of a Regulation E system for flat conversions. The full solution can be found at

The normal method of installation is to attach the hangers through the existing ceiling. These hangers house 50mm wooden battens that then act as the support onto which new plasterboard is suspended.

We also describe a method below which employs Isosonic Brackets (rather than Hangers) which can be used with metal sections . The acoustic performance of both systems is identical.

For customers looking to insulate noisy pipes, please see our acoustic pipe wrap, for a highly effective insulating material.

Soundproofing Basics

When soundproofing a ceiling it is necessary to improve three basic components:

  1. The mass of the ceiling. This is normally achieved by adding two layers of acoustic plasterboard and some high density wool. An SBx upgrade (see below) further enhances this by the addition of even more resilient mass. 
  2. The resilience of the ceiling. This is the springiness of the ceiling. Without this, the addition of the mass will have very little benefit. Acoustic Hangers and Brackets are a very cost effective method of improving resilience. 
  3. The sound "absorbency" of the ceiling. By adding different components the sound gets trapped more easily within the ceiling; here we prescribe the easfit slab.

SBX Upgrades
For those customers looking for the maximum possible performance from an acoustic ceiling we also offer the possibility of an SBx board upgrade. This is a fine silica filled board that has excellent soundproofing properties far in excess of regular plasterboards. For an overview as to what the SBx board is please see here.

In general, our practical experience shows that the SBx board will improve performance by around 8-10 dB over and above the stated figures in the comparison table. There is also a beneficial improvement in impact sound performance on top.

The method for installation of this ceiling soundproofing solution is straightforward.

The joist lines of the existing ceiling are located, either via a joist finder sold at B&Q etc. or by carving into the ceiling.

Along the joist line, starting from one end, you affix an acoustic hanger. Hangers are screwed into the joists at max 800mm centres across the length of the joist.

Wooden battens (kiln dried) are threaded through the joist hangers.
A Flexi-edged mineral wool layer is affixed between the battens.
A Double plasterboard layer is affixed to the battens and the perimeters sealed.

Any spotlights placed in this ceiling will require acoustic hoods.

* Please note we do not supply the wooden battens needed for this solution. You will need 50mm by 50mm "kiln dried" timber.

Important note on recessed lights

If you are adding recessed spotlights in this ceiling you will need to add an acoustic fire retardant light hood to each light, otherwise your soundproofing efforts will be severely compromised due to the hole you have created. These spot light hoods can be purchased from our on-line store.

Understanding Performance

The total performance which is normally quoted on most sites refers to the performance of an average ceiling with soundproofing materials added.

We also give an indication of performance uplift. Remember (see our guide to soundproofing) that every 10dB of performance uplift corresponds to roughly a 50% improvement in the performance of the ceiling. So 20dB would indicate a 75% improvement over and above the original ceiling.

Soundstop refers to dB improvement when we compare any of our systems. This, we hope, is an informative way of telling the customer what kind of improvement they will get when they add a soundproofing system. Many competitor sites offer products that will boast much higher numbers. Be aware these are often referring to a complete system which include the original ceiling or floor that you already have. This often leads to confusion when trying to compare systems. We are an independent site and as such will try to sell only the most effective solutions available in the market today.


Key Points:

  1. Delivery direct to your door within 48 hours
  2. A low mess ceiling solution
  3. A very DIY-able option
  4. Online calculator below will work out your exact requirements

Acoustic Bracket ceiling soundproofing

Acoustic Bracket ceiling soundproofing


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Acoustic Hanger Sound Insulation performance table

Ceiling Depth Gain Total system Performance airborne Typical Airborne Improvement Typical Impact Improvement
Acoustic Hangers 90mm 46dB 18dB 16dB
Acoustic Hangers SBx Upgrade 89mm 51dB 20dB 19dB
125mm Brackets 80mm 46dB 18dB 16dB
45mm Brackets 80mm+ 46dB 18dB 16dB

Compare all our ceiling solutions here.