Acoustic Insulation

    Noise is a system of sound vibrations that correspond to variations in air pressure, perceptible to the human ear. For several years, noise has become one of the biggest stress. The man, who does not have the physiological ability to isolate himself from sound as he can from light by closing his eyes, feels more and more the need to protect himself from unwanted sounds.
    Acoustics is the scientific sector that aims to study the physical, physiological and psychological problems regarding the emission, propagation and reception of sounds and noises.
The fiber structure of the glass mineral wool products gives a good thermal insulation and a very good sound insulation.
    High-performance, certified, perfectly integrated into the insulation systems, GecsaTherm® glass mineral wool products bring added comfort to living spaces.
The porous and elastic structure allows the acoustic insulation against the air noises, the ones of the impact and ensures the acoustic correction inside the buildings.

Acoustic insulation is the sum of the measures taken for
reducing the acoustic transmission between the noise source and the space
which must be protected.
Rw – represents the insulation index for airborne noise.
Lw – represents the insulation index at impact noise.
The higher the indices above, the better the insulation.
Types of noise
1. External air noise – generated by road, rail, aircraft, etc.
2. Internal air noise – generated by the TV, music mixer, etc.
3. Impact noise – generated by falling objects, knocks, chairs drawn on the floor, etc.
4. Noise generated by equipment – elevators, water installation, channel, ventilation, etc.

    The sound level, expressed in decibels (dB), indicates the intensity of a sound on a differentiation scale.
    From 10 to 120 dB, the acoustic pressure corresponds to the background of different nature and creates perceptions that go from calm and quiet (10 dB) to the limit of ear pain, (120 dB). This transposition into figures allows, starting from an identified sound, to define the desired sound level to be obtained after isolation. To be noticeable, any acoustic enhancement must be at least 1 dB. If noise is generated simultaneously from multiple sources, the total noise represents their sum.

    The table-top soundproofing system guarantees optimum results for sound insulation between two rooms, combining sound and thermal protection with quick installation and low costs.
    As a matter of principle, the spring board system refers to two layers of solid board, such as cardboard gypsum boards, separated by a spring, elastic material, and air.
    The mineral glass wool, due to its elastic structure and the large volume of air included, is a perfect material for this system, increasing the performance of sound insulation.
    A spring board system is characterized by its light weight, flexibility and maximum efficiency. Also the efficiency of this system from the point of view of sound and thermal insulation compared to the classical system is high.
In the classical construction system, in order to achieve satisfactory sound insulation, the thickness of these walls must be large, which results in a heavy weight. To support such a heavy weight, the strength structure and foundation must be increased resulting in high additional costs and high time of execution and drying of the materials.

    With the mass insulation system spring table using GecsaTherm® glass mineral wool every centimeter provides an additional 1 dB sound insulation.
The costs are much lower compared to the classic system due to the low weight, no need to revise the resistance structure, short execution time due to the ease of installation and being a dry system there are no additional drying times.
    Also, the mineral wool of glass reduces the reverberation times due to its absorbent qualities and manages to decrease the sound level.
    For the same level of sound insulation, the basaltic mineral wool must have a density 3 times higher than the mineral glass wool.