Surprisingly, while people are willing to overpay for a quiet home, all developers, on the contrary, are reducing their soundproofing costs. Partitions and ceilings have reached their minimum thickness, in which they can somehow pass soundproofing standards. And even then, let's be honest, on paper. ⠀ Finishing in Moscow and St. Petersburg: http://otdelochnoe.com ⠀ Naturally, this leads to the fact that an incredible number of different soundproofing systems have appeared on the market. They all have one important fact in common: they are very expensive. ⠀ But you can do everything much cheaper, for this you just need to understand how soundproofing works. We will not delve into the wilds of structural and airborne noise, but take the simplest explanation and dance from it. ⠀ A sound wave comes out through the wall into your apartment into the room, which you do not want to hear. We will not be able to weaken it with a partition, since the partitions have already been installed by a budget developer (changing a partition with neighbors is a rather exotic option). Our task: to put another partition in the path of this wave, reflect the wave back and make it re-reflect between these two partitions in a space filled with a special material that will convert the sound wave into heat, dissipate it, in other words. And here there are two main points, knowing which you can replace all these expensive solutions with very cheap ones that work not much worse. ⠀First. Sufficient reflective properties appear only in partitions with a weight per square meter of more than 20 kg. Knowing that 1 m2 of drywall weighs 9 kg, we understand that the required number of layers of gypsum board is 3 Well, the minimum is 2, but 3 is better. The price of drywall is pennies compared to any soundproofing system, adding one layer of gypsum board is not at all expensive. ⠀Second. Materials like penoplex-foam plastic are not soundproofing or sound-diffusing at all. To dissipate the sound wave, it is necessary to use basalt wool, the so-called acoustic phenol-free. In its production, formaldehyde is not used for gluing, which will protect you from harmful fumes. The minimum thickness of such a plate is 50 mm. ⠀Thus, the minimum thickness of the soundproofing additive is 80-90 mm. Everything else is extremely ineffective, no matter how expensive it is. Well, unless you find natural rubber used to insulate submarine compartments, where every centimeter of space costs millions of dollars. But vibration hangers, special acoustic sealants, some films, this is all a way to pump more money out of you. These events will not bring you any real TANGIBLE benefit, of course, they will show you some studies, graphs ... forget it. This is all just to sell you more junk. Yes, on video you can effectively put a radio in a soundproofing cube and show that it is muffled better than with some other method, but an apartment is far from a cube, this is a manipulation of alleged facts. ⠀There is another very important point: when installing such soundproofing of walls, you should not have any cracks, sockets in such a wall are placed in special acoustic boxes, the perimeter of this entire partition must be filled with acrylic sealant (you do not need a more expensive "acoustic" sealant, it's all a scam). ⠀Now that we have dealt with the noise from neighbors through the wall, what can be done with the neighbors above and below. A heavy thick screed and the use of the same basalt wool will help with the neighbors below. In fact, you will simply repeat the soundproofing wall, only on the floor and in a more powerful version. ⠀There is no particular point in soundproofing the ceiling. The noise from the neighbors above is not airborne, but more often structural: stomping, impacts, furniture... soundproofing the ceiling will do practically nothing to help you with this. Such insulation is expensive, and often does not bring the expected effect. But you can remove reflections in the apartment and significantly increase acoustic comfort due to the absence of echo in a very affordable way. You can stick acoustic foam rubber, which is used in recording studios, under a suspended or plasterboard ceiling. #SOUNDPROOFING #WALLS #APARTMENT 00:00 - Intro 00:35 - Residential buildings without soundproofing 01:37 - The logic of soundproofing in an apartment 02:17 - Reflective properties of a partition 02:54 - Basalt wool, acoustic phenol-free 03:24 - Minimum thickness of soundproofing 04:00 - A scam 04:44 - We do not leave gaps! 05:00 - Insulation from neighbors above and below 05:51 - Removing echo and resonance 06:40 - IKEA and noise in the apartment 07:31 - Soundproofing memo