The wide range of materials is applied to noise isolation of rooms at what each type is intended for use taking into account features of the room, type and source of foreign sounds.
It is required to you
- - the sound reflecting materials
- - sound-absorbing materials
- - the combined sound insulators
- - damping noise-insulating materials
Instruction
1. The main obstacle to hit in the dwelling of foreign sounds is the massif of walls, partitions and overlappings. Lack of density and thickness of protections - very current problem for the municipal inhabited sector. The solution of task is application of the most various soundproof materials designed to increase comfort of housing and to protect owners from external irritants. However it is necessary to know that certain types of materials are intended for use in specific situations.
2. The most widespread materials which are used for sound insulation of rooms are the rolled layers made of dense and elastic substances: rubber, bitumen, pith tree or rubber. Main objective of such shumoizolyator is reflection of the powerful sound vibrations extending with low frequency - so-called shock noise. Examples such are sounds working drill or the perforator, household appliances. The main feature of these sources of sound - distribution of vibration on material of walls and overlappings. The sound reflecting materials push away this vibration due to mechanical properties of elasticity, without allowing it to get for insulation layer.
3. There is also other source of the foreign irritating sounds - airborne noises. It is possible to carry the human speech or sounds of animals, music or the automobile alarm system to them. For elimination of such noise sound-absorbing materials which have the low density and special structure are used: fibrous or cellular. Fibers are basis of glass or mineral wool while the cellular structure is characteristic of polyurethane, penopolietilen or frothed polistrirol. Such materials effectively disseminate sound vibrations with high frequency and small amplitude thanks to what the straining background noise indoors vanishes.
4. For usability the producers release the specialized noise-insulating coatings combining several types of materials with different density and physicomechanical properties. They are called the composition or combined sound insulators. Each grade or type of such materials can be intended for use in certain conditions thanks to accurately established set of properties. That is, one type of shumoizolyator will be optimum for covering of walls in apartments, but it will be almost useless for application in basements or on ceilings.