Sontext Frequently Asked Questions

Acoustical Panel and Sound Absorption FAQ's

Acoustic Panels are designed to absorb or soak up sound in a room or space. The form of an acoustic panel can be many and varied as the finish. A room or office with lots of hard surfaces may reflect sound, causing excessive noise. Acoustic panels can be fixed to the walls or ceilings to soak up this reflected sound, also called reverberation, or “echo”.

Acoustic panels can also include acoustic baffles or clouds, these are normally fixed by hanging from a roof or ceiling structure.

In interior spaces like recording studios or concert halls, Acoustic Panels are critical to improving the quality of sound being produced.

For types of acoustic panels see

Acoustic Panels are designed to absorb unwanted sound or reduce the reverberation in a room. Acoustic panels are placed on the wall or ceiling to absorb the sound striking their surface. Acoustic panels vary in performance due to the construction of the product. For example, panels can be faced with an open surfaced fabric, or with perforated gypsum, wood, metal and PET.

Each of these panels will absorb sound across the range of frequencies differently That is why it is always recommended that you speak to an acoustic specialist, to help you choose the right acoustic panel for your application.

In many situations the décor of the room will determine where you can locate the acoustic panels. In a lot of commercial properties there are many glass walls or partitions. In this circumstance the only available surface will be the ceilings or a temporary movable Acoustic Panel would be the suggestion.

It is important to find out which surface is creating the most reverberation or reflections and this would be the first one to treat. Speaking to an acoustic specialist will assist in the correct location however the choice may be determined by the décor or design of the space. For further information


The choice of acoustic panel is primarily determined by the nature of the sound or noise to be treated.  For example, a fabric covered 25mm glass fiber acoustic wall panel will be better at treating mid and high frequencies whereas a perforated wood wall panel will be better at low frequencies.

The huge range of facing colours, patterns and finishes available will enable you to decide in the decorative “look” that you want and at the same time enable you to identify an acoustic panel that will give you the sound absorption performance you require .

Acoustic Panels can be installed in many ways either so that they are removable or permanently fixed to the substrate. Some panels can be fixed with adhesive or on removable brackets. For walls this can be as simple as a hook and rail or with a permanent construction adhesive. Most manufacturers will have their own unique fixing system. Sontext recommends either a split batten system for wall panels or a direct fix method. See

One of the most frequent questions asked about Acoustic Panels. Acoustic Panels will not block room-to-room sound transmission, because there are many paths the noise or sound can take, though or around gaps in:

  • Doors
  • Ceilings
  • Floors
  • Walls

Because acoustic panels absorb sound they can significantly reduce the noise in the room and this could make the noise less noticeable in the adjoining room. Sound transmission depends on the construction of the wall or ceiling itself.  It is important to speak to your builder or an acoustic specialist in sound transmission.

Noise going through door is a common problem. While door construction and the amount and type of seals around the door are the most important aspects, in some situations Acoustic panels can reduce the transfer through doors.

For example, acoustic panels may help minimise sound transmission through doors  between adjoining rooms in hotels or consulting rooms.

See pictureAcoustic panels may reduce the reverberation in the void between doors and also add some sound attenuation to the doors. Many Hotel chains take advantage of this in their adjoining room as do medical centres between consulting rooms.


Situations occur with consulting rooms where the consultants, or clients, can hear noise  from an adjoining reception or waiting room.  Many reception areas or waiting rooms are constructed of hard clean surfaces with glass and this creates a lot of reverberation.

The best  solution to this is to reduce the noise in the reception area by installing acoustic panels, these can be on the walls or ceilings. See picture belowReduce Noise in Doctors Surgery Sontext

The treatment usually involves 25mm thick acoustic ceiling panels like SerenityLite Ceiling panels together with 25mm thick Fabric covered wall panels