Soundproofing of walls
Due to the fact that the walls in our homes often do not cope with the problem of soundproofing, the topic of soundproofing walls has become very relevant for many. Whether it is new buildings, where the walls are often built with violations of technology, or simply the thickness of the wall between rooms is minimal, or old buildings, where the walls may be made simply of drywall, without acoustic isolation and materials - there is a need to improve the soundproofing of walls everywhere.
Ideally, soundproofing of walls should be considered at the construction stage of the room, this will save the resident from many problems. But if the room is already built and no one has taken care of the soundproofing of the walls - there are solutions that will slightly reduce the area of the room but will seriously save the situation.
1. Additional brick wall.

Building a second brick wall closely to the existing wall will significantly increase the soundproofing of your room. The thicker and heavier the wall, the less sound you will hear coming from outside. Thus, the soundproofing of the walls will increase by about 25 times!

2. Brick wall with inter-wall filling.
If the second brick wall is built at some distance from the first (5-15 cm), and the void between the resulting walls is filled with sound-absorbing material like Macsound prof, the level of soundproofing of the wall will increase by about 30 times.
These options are very effective but significantly reduce the area of the room. There are more practical solutions based on drywall sheets with a damping layer made of Macsound prof.
3. Additional double wall made of drywall
If you add a single wall made of drywall sheets to the main wall - the soundproofing of the wall will increase slightly due to the mass of the drywall.
To achieve maximum soundproofing of walls using drywall, double walls with a double layer of drywall are used, between which Macsound prof with a thickness of up to 10 millimeters is placed - to absorb resonances, and a layer of sound-absorbing Macsound prof with a thickness of 40 mm. At the same time, the distance between the double drywall walls can be from 5 to 30 centimeters. The greater the distance, the greater the soundproofing coefficient.
Soundproofing will increase due to the different stiffness of the drywall sheets if the sheets of double drywall are of different thicknesses - for example, 12 and 9 millimeters.
It should also be remembered that when carrying out soundproofing work on walls, all joints and gaps must be sealed, as sound penetrates just like water through any openings.