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Types of Soundproofing products

The Marmox soundboardThere 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, it is also known as reverberated sound.

•RED: Impact Sound – sound directly transmitted into the floor. This noise can increase if the floor is tiled.

•ORANGE: Airborne Sound – the noises we hear – direct from the source, or former impact or former reflected sound. This is the noise such as music, television, machinery and voices we hear passing through walls and ceilings.

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 rubber foam 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 lateral 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 also provides thermal insulation. 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 there.

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

For more information on our SoundBoard, or any of our sound absorption products, get in touch with us through our contact page or speak to one of our helpful team members on 01634 835290.


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