EASY Noise Control provides various solutions for good sound insulation. What is sound insulation? And what sound insulation material should I use in my situation?
In a broad sense, “sound insulation” is an alternative word to “acoustics”. Sound insulation then includes both absorbent and sound-insulating boards and materials. Nevertheless, we make a distinction between sound absorption material and sound insulation material.
A material that blocks (insulates) sound we call sound-insulating materials. These are often plates. A sound insulating plate often has a high mass.
A light and open-cell material that dampens and absorbs sound waves we call sound-absorbing materials. Often foam or soft materials. These are mainly intended to improve poor acoustics. And to reduce reverberation and reflections.
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Types of sound insulation materials
Within acoustics, we distinguish different types of sound insulation materials.
First of all you have absorption material. Sound-absorbing materials improve the acoustics in a room. This makes the room sound less hollow and reduces the echo.
Secondly, there are sound-insulating materials. These materials block sound. Sound insulating boards often have a high mass. The rule is: the heavier, the better the sound-insulating plate.
Thirdly, there are sound-insulating materials. These are materials that are placed on, for example, metal surfaces. Deafening plates dampen vibrations on steel and aluminium surfaces.
Finally, there are vibration-isolating materials. These prevent vibrations from spreading. An example of this is a floating wall. Or sound insultion floor such as EASYbond for the construction of floating floors.
Sound insulation materials limit the transmission of sound. Transmission is the degree to which sound passes through the ceiling or wall. The rule is: the lighter a sound-insulating material, the higher its transmission. A sheet of paper has a very high transmission, whereas a concrete floor has a very low transmission.
Transmission is very important in a divider. By using sound-insulating glass, for example, you limit the nuisance from outside noise. Airborne sound insulation is usually done with mass.
Every doubling of mass leads (in theory) to a 3dB reduction. That is why our heaviest sound insulating material EASYmass sound barrier mats have a weight of 14 kg/m2.
Anti-drumming materials prevent vibrations travelling through a material. Sound-absorbing materials are used, for example, on large metal surfaces. Examples are water barriers or boats. It is also used in sound insulation for cars, for example to reduce the vibration of speakers and audio equipment.
A textbook example of sound-proofing is a layer of sound-absorbing material under a sink. This ensures that no noise is generated when the tap is turned on.
There are different ways to reduce the vibration of a product. In the shipping industry, deadening paste and sandwich deadening (spring mass) are often used. EASYdemp is a frequently used anti-drumming material for car insulation and water barriers.
Vibration damping is also a form of sound insulation material. This often involves a constructional solution. By isolating vibrations, you prevent sound from spreading further in the construction.
Examples of vibration isolation are floating floors (between floors and ceilings). In addition, there is a wide range of vibration dampers available on the market for machines, for example.
Sound insulation ceiling and wall
Do you suffer from noise inside, from above or from the nearest neighbours? This has to do with the partition wall or sound-insulating ceiling.
The right solution for sound insulation of the existing ceiling or sound insulation wall strongly depends on the noise problem. We distinguish two types of sound: contact sound and airborne sound.
Impact sound is the result of a vibration. This vibration can occur directly on the floor above. Walls can also transmit vibrations. Examples of impact sound are footsteps on wooden floors and slamming doors.
It is best (and cheapest) to combat impact sound at the source. For footsteps, it is best to install a vibration-proof floor. If you have noise from your upstairs neighbour, insulating their floor is better than your ceiling.
A vibration-isolating and floating floor is also the best solution for a subwoofer and, for example, a drum kit.
The floor and the ceiling can both be tackled. Is a vibration-free floor not possible? Then you can reduce the noise by insulating the ceiling.
Soundproofing the ceiling is best done with a suspended ceiling. You can make such a sound-insulating ceiling using spring steel beams, EASYpol polyester wool and a finishing layer of plaster.
For the best sound insulation of a room, you make a complete box-in-box. This is a very radical solution but the only solution to get it completely silent.
Do you experience noise nuisance from the sound of your voice or the television of your neighbours? In this case, we speak of airborne noise. When airborne noise can be heard through a floor, this is usually due to cracks in the floor.
Other weak spots in a floor are ventilation openings and heating pipes.
By sealing gaps as much as possible, a good profit is usually achieved for the sound insulation of the floor. If this is not sufficient, it is better to insulate the floor as a whole. For example with EASYmass 14 kg/m2.
The sound insulation wall is another common problem. In this case, you should think about a retention wall or cavity filling with flakes. Try to keep as much sound inside as possible.
During the construction of a house or workplace, you may find that too many hard materials are used. We can advise and help you with the acoustics. For example, you can take measures on the ceiling. Acoustic panels improve comfort in the room itself. However, these measures have little or no effect on the transmission to other rooms.
Acoustic or sound insulation materials with an industrial application are often basic materials such as, for example, convoluted foam.