sound insulation room

sound insulation room – We do not even think that our irritability, headaches , disturbed sleep may be due to the entering of extraneous sounds , such as the hum of passing transport , noise from neighbors , loud crying until midnight company at the next entrance or tripped alarm . Significantly reduce the discomfort arising from extraneous noise , help soundproofing rooms. Soundproofing means lower sound level , penetrating from the outside. Unfortunately , it is impossible to achieve 100 % insulation , but it is possible to reduce noise as much as 60%.

Approach to the problem of sound insulation requires seriousness and responsibility , it is necessary to strictly define what effect we expect , as for protection against noise , there are various different materials . As there are many ways to lay sound-proofing material , to achieve maximum efficiency you need to calculate the amount and types used .

 

types of noise

 

There are four types of noise:
impact
air
structural
acoustic

Impact noise arises from the impact of heavy objects on the floor or wall, from the sounds of steps or moving furniture , while vibrations are transmitted to the floors and walls and can be spread over large distances , being transferred to adjacent ceilings, floors and walls.

Airborne noise form the air vibrations that are absorbed by the walls and ceilings , but the level of absorption depends on the material from which they are made, and on their thickness . Airborne noise , mainly spread through cracks and loose fitting doors and windows.

Pattern noise is transmitted by ventilating shafts , pipe vibration and other communications. We all know how much and far heard a knock on the battery .
Acoustic noise , mainly occurs in the empty not equipped premises , manifesting itself in the form of an echo.

Functional differences soundproof materials

 

Depending on the kind of noise is carried out on the separation of acoustic insulation materials and sound absorbing . Sound-absorbing materials absorb sound vibrations and oscillations , reducing the energy of the sound wave , dissipating it, and are especially effective in protecting against shock and acoustic noise . These properties have foam when laying into the floor under screed , pressed panels . In frame partitions to provide sufficient sound insulation between adjacent rooms or mineral wool used in the form of plates or mats .

Sound insulating materials have the property to reflect the noise , reduce the sound pressure level at the time of wave propagation through a barrier , preventing their further spread . Such funds are used for protection against airborne noise . These include non-woven inorganic soundproof materials , heavy mineral and protective membranes . For maximum insulation recommended sound-absorbing materials in combination with sound insulation .

 

Options soundproof materials

 

Soundproofing materials have varying degrees of hardness :
soft ;
semi-rigid ;
solid .
Soft materials are produced based on glass fibers or mineral wool , felt, wool , etc. They have a volumetric weight up to 70 kg / m³ . with sound absorption coefficient to 0.95 . Semi-rigid fiberglass or mineral wool is a plate , polyurethane foam and other materials having a cellular structure . Their bulk density is up to 130 kg / cubic meter . , And the absorption coefficient to 0.75. For the basics of solid materials used in granular or suspended mineral wool , porous aggregates, such as expanded perlite , Penza. Their bulk density is about 400 kg / cubic meter . , And sound absorption coefficient of 0.5.

The most acceptable way to protect against airborne noise are considered multilayer structure consisting of alternating layers of soft , dense and rigid acoustic insulation materials .

 

Soundproofing elements

 

Soundproofing can be carried out for individual buildings and building elements :
sound insulation of floors ;
sound insulation ;
soundproofing ceilings;
installation of soundproof partitions;
sound insulation of the roof.
Soundproofing room in the complex assumes the principle of ” room within a room ” with all elements isolated premises , avoiding rigid connections between the elements and the inner skin .

Before starting to work to evaluate the structural integrity of the premises and , primarily , to remove the existing gap , cracks and holes , as soundproofing premises implies a complex of measures , not only the choice of insulation materials.