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SoundBoard

Types of Soundproofing products

There are three types of sound which can be reduced. Reflected Sound, Impact Sound and Airborne Sound. These are shown on the following diagram:

•BLUE: Reflected Sound – Sound bounces off surfaces to become distorted .... different frequencies may sound louder.

•RED: Impact Sound – sound directly transmitted into the floor.

•ORANGE: Airborne Sound – the noises we hear – direct from the source, or former impact or former reflected sound.

Marmox UK supply two different sound absorption products - one to reduce impact sound on tiled floors (SoundBoard) and a sound absorption panel typically used as ceiling panels (Heraklith Acoustic Panel). Wherever you are in the UK, you can purchase high quality soundboards and sound absorption products from the experts at Marmox.

Reducing Impact Sound (on a tiled floor)

Impact Sound is the type of noise Marmox SoundBoard was designed to reduce. It is the noise that is transmitted through tiling and through the floor and other building elements. The SoundBoard effectively removes the solid link between where the impact happens (i.e. the footfall on the tile) and the ceiling by placing a layer of synthetic rubber in between so that the sound waves do not have a medium which they can pass through.

Marmox SoundBoard is a tile backer board for floors designed to reduce the noise that can be heard in the room or flat below.

Ceramic tiles on floors can make noises such as footsteps sound even louder in the room below. Many local authorities do not allow tiled bathrooms in shared accommodation for this very reason. Marmox Soundboard enables floors to be tiled without the danger of causing noise pollution to the people in the room or flat below. The boards are available in two thicknesses: 8mm and 12mm. Both thicknesses contribute a noise reduction of approximately 20dB, the difference in the two thicknesses is that the 12mm board provides more thermal insulation than the 8mm version.

It is however much more than just an impact sound reduction layer; it provides decoupling so that movement in the floor is absorbed by the board and not by the tiles so the tiles don’t crack, it is completely waterproof and because of the layer of synthetic rubber it provides even better insulation than the standard Multiboard. This means that as well as reducing the impact of sound, they are fully waterproof and help to lock in the heat in the rooms where they are fitted.

How to install soundBoards

The first step is to fix the boards, rubber-side down on to the floor. Use either a thin bed of flexible tile adhesive or Marmox Multibond. Multibond itself is a visco-elastic material so absorbs sound waves thereby offering slightly more sound reduction than just using the boards on their own. Marmox Multibond does however take 12 hours to cure sufficiently to tile upon.

Irrespective of which adhesion method is used, a gap of about 4mm should be left between the edge of the boards and the wall, which is then filled with a visco-elastic adhesive such as Multibond to eliminate the possibility of flanking sound happening here.

After you have installed our sound absorption products, tape over the joints and tile as normal.

Reducing Reflected Noise

Reflected Sound is addressed by using Sound Absorption boards. We supply the Heraklith range of thermal / acoustic woodwool panels. These sustainably sourced timber based panels are commonplace in recording studios, theatres, schools and colleges and are effective in reducing reverberated or echoed sound.

The standard acoustic panels comprises a fine grade of cement-bound woodwool providing not just acoustic absorption but a degree of acoustic insulation, thermal insulation (thermal conductivity is 0.08W/mK), vapour permeability, 60 minutes fire protection and depending on how the boards are installed (the air gap behind) an alpha-W value of between 0.40 to 0.70Hz - Class C to D. With a layer of mineral wool behind the Woodwool panels, the alpha-W value is improved to between 0.75 to 0.95 - Sound Absorption Class B to A.

These boards conform to the requirement set out in Building Bulletin 93 (of Part E, UK building regulations): "Acoustic design of schools: performance standards"

Combination boards can be manufactured comprising a sound absorbing, fire resistant woodwool panel combined with a layer of mineral wool to reduce airborne sound.

Further details on the range of Heraklith Wood Wool Boards are presented on the specific page.

You can also keep up to date with the latest on soundproofing your property by reading our insulation news, or taking a look at our Facebook and Twitter page.

For more information on our acoustic and sound absorption products get in touch with us through our contact page or speak to one of our helpful team members on 01634 835290. We have a wide variety of stockists based across Kent, London and the rest of the UK, so whatever sound absorption products you need, you'll find them.

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