Sound -absorbing materials for doors | Dooronline

Sound -absorbing materials for doors | Dooronline

Sound -absorbing materials reduce noise to varying degrees, not allowing it to be reflected from the barrier inside the room. In their structure, they are divided into granular (pumice, foamed rubber), fibrous (mineral wool, fiberglass, felt) and cellular (polyurethane foam).

The degree of sound absorption is measured in the interval from 0 to 1 and is called the sound absorption coefficient. Materials, the sound absorption coefficient of which from 0.4 and above, are considered sound -absorbing.

To ensure the desired noise comfort, sound -absorbing material should be chosen based on the nature of the prevailing sounds in the house. Shock noise (from repair work, sounding sounds, rearrangements of furniture) absorb elastic materials mainly with a cellular structure. From the noise of the air (from the enabled electrical engineering, loud sounds from people and animals) will save granular and fibrous materials. For the absorption of structural sounds (arise with a rigid connection of the loading structures of the building), protective gaskets for the joints of the supporting parts are used. The simplest and most common sound -absorbing materials for doors are dermatin and genuine leather. Layers of mineral wool or polyurethane foam (sound absorption coefficient 0.6-0.75) are placed under such upholstery. The degree of sound absorption depends on the number of layers. The effect will be maximum with bilateral upholstery of the door with the thickness of the upholstery layer of at least 5 cm.

Good sound absorption can be achieved if you overtake the door with a wooden array: a pine or oak is best suited. DSP sheets in this case are ineffective.

Additionally, with any method, it will be useful to install automatic rubber thresholds: when the door is opened, they go to the door leaf, and when closed, they fit tightly, creating the effect of sound insulation.