The cold insulators (thermal) absorb the sound. 1. Fiber glass obtains when fusing glass and is the commercialized product more since the originating sound between rooms or of the outside falls. In addition, he is resistant to the high temperatures. 2. Unicel Technically called expanded Polystyrene, is a very light and resistant material that does not rot nor rusts. In average, 98% of the volume of the material are air and only 2% solid matter, being the air in rest an excellent acoustic insulator.
3. Wood cork and agglomerates. It is a natural product made up of dead cells and air, offering low densidad; he is light, impermeable, flexible, odorless, hygienic and resistant. Recommended to have grounds in hospitals, rooms of music and schools. 4. Rock wool Is a mineral wool with complementary properties to the fiber glass and it is distributed in the form of naked or had panels, felts, blankets, flock or shells.
The attenuation of an insulator of this type within a cavity reduces from five to 10 dB in the construction. Also they emphasize the cellular glass and the rubber foams. In Mexico, already walls, concerned of the United States are commercialized, that fulfills the special characteristics to diminish the amount of sonorous energy. Only they must to pay attention to the original wall with tail of special contact (glue) and later to cover the surface to improve the finished ones. The price average by square meter is of 500 pesos. To count on an atmosphere without noise is one of the most valuable qualities of a building or building. By this, the specialists make use of the acoustic architecture that assures the efficient distribution desirable sounds and the exclusion of the disagreeable ones. Original author and source of the article.