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How to provide the perfect sound insulation in a room? Overview of recommended products

Sound insulation of walls

What are the most effective materials for acoustic wall insulation? How to mute the room during the renovation of the house?

The choice of products on the market that are designed to improve acoustic comfort in homes is huge. This shows that there is a demand for such products and at the same time classic building materials do not meet the expectations placed in them. Therefore, acoustic tapes, acoustic plates and acoustic mats appeared in shops.

Acoustic insulation of walls - acoustic plaster

The simplest method in this case is to lay a sound-absorbing, cellulose or silicate spray plaster on the wall. Plasters of this type have a rough texture and must remain so, so it is not allowed to finish or wallpaper them anymore. They absorb up to 70% of the sounds and can disperse them. In this way they reduce reverberation. In this case, the sound absorption coefficient is from 0.35 to 0.6. Silicate plasters are up to 2.5 cm thick. The more, the better of course. Cellulose plasters are slightly thinner.

Acoustic insulation of walls - acoustic panels

If there are load-bearing or partition walls in the house, you can also try to improve their acoustic insulation. During the renovation it is worth replacing the classic plasterboard cladding with special acoustic boards. Interestingly, they are screwed in the same way as traditional panels to a grate made of steel and wooden posts. Between them there is mineral wool, which is also a great damping material. The gypsum core in the case of such panels has a clear crystalline structure. In addition, it contains mineral fibres and other additives that reduce sound penetration. Such boards are also more flexible than others. They suppress airborne sounds. They make it possible to achieve an insulation level up to 5 decibels higher than in the case of ordinary gypsum-cardboard panels.

Acoustic insulation of walls - acoustic foil

The insulation of load-bearing grids and skeleton walls can also be improved by covering the profiles with soundproofing foil made of rubber or modified PVC. This should be between the grate and the slabs. It is 3 millimetres thick and 110 millimetres wide. It is flexible and rather heavy. It shall be mechanically bonded or fixed. In this case, the insulation index is up to 40 decibels. Such a panel must be installed in such a way that no gaps are created between its strips. When not using foil, make sure that the lining does not come into contact with mineral wool.

Acoustic insulation of walls Acoustic panels

Equally interesting product used for soundproofing walls are wood-like acoustic panels. They are produced from MDF boards. They have a decorative character, so the walls finished with them look nice. They effectively disperse sounds and suppress them, reducing reverberation. In this case, the sound absorption coefficient ranges from 0.17 to 1.08. Much depends on the type of panel and the frequency of sound. The panels are available in the form of large panels and have a height which is a multiple of 59.2 cm. They are very popular.