After almost 4 months of repairs, we moved into a new home. All is well so far, but after the first night we found that the building is quite noisy - and believe me, it's not about the neighbors. Everything resounds like in a concert hall, even the slightest noises can be heard, and passing through several walls or the corridor even intensifies. Strange, but very unpleasant job for me. The building is of the PPP type - the package of lifting slabs, built in 86. I think. I need advice on what soundproofing to do. I read a lot about different options - cork, mineral wool with drywall, etc., but I have a hard time figuring out what is most appropriate. The small size of the rooms and the low ceilings is also a problem, the joinery literally ends in the ceiling and there is only 4 cm to the opening part - a more massive construction such as plasterboard and cotton wool is almost impossible. Cork is an option but I don't know if it can be painted, for example, because I don't like it as a decorative effect. It took a long time, but the confusion is great. Thanks in advance for your attention and advice.
Answers 6
Now, it first depends on which sounds you want to isolate - those that occur in the home (and "echoes") or those that come from outside through the walls? The first is called "acoustic processing" and the second - "sound insulation". The fact that the rooms are small is a problem ... good sound insulation requires sacrificing at least 10-15 cm of space around each wall ... You can go with 7 (5 mineral wool and one drywall on top), but that's it compromise. On the ceiling, if you have only 4 cm to the window sash, you can not put anything other than cork. It is good to have several layers, so that you can bring at least 1 cm thick. Yes, it can be puttyed and painted with latex on top. But keep in mind that the more you lubricate it and fill its pores, the more you kill its acoustic properties (but not the sound insulation!). If you put it on very lightly, as long as it catches the latex, it retains such a porous, perforated structure on the surface, which can also be used for decorative plaster ... In order not to echo your home, you must have materials on the walls, floor and ceiling that strongly absorb sound, such as kitenitsi, guberni, acoustic panels ... The good thing is that even if you treat only one wall of two parallel ones, the effect is obtained (because the sound waves can no longer be reflected now in one, now in the other to infinity, and echoing ceases in the embryo). That is, if you put on the floor a nice shaggy kitenik, it is not necessary to process the ceiling. The same effect is obtained if you have a lot of furniture in the room, and especially libraries and sections full of books and clothes. It is no coincidence that it is deadly quiet in public libraries ... If you drop heavily folded curtains along one wall, this is a great acoustic treatment. The bare plasterboard walls resound disgustingly - they are to the sound what the mirror of light is ... If you click your fingers between two such parallel walls, then for half a second you hear a sound. However, if you put it on one cork, the picture changes dramatically. Keep in mind that cork performs both functions - soundproofing and acoustic. However, its sound insulation is quite limited (especially with a thin layer). For good sound insulation, a light partition wall is made of steel profiles, parallel to the real one. Put 5, 10 or 15 cm (one, two or three layers) of mineral wool in it. The top is closed with plasterboard (which may be perforated in a certain way for acoustic purposes). And on top you glue 5-7 mm cork. This is the ideal option. If your cotton wool is one layer, you put one with a density of 45-70 kg / m3. If there are two layers: the one on the real wall is glass wool such as URSA TWF FONO or ISOVER Akusto with a density of 20-35 kg / m3. Your second layer is the same as a single layer. If there are three layers: the first two are like the two-layer, and the third (which is from the inside of the room - even denser cotton wool, such as 70-90 kg / m3. With three-layer insulation you will forget that you live in a block of flats and you have neighbors, and you will be able to pick up a lot of noisy parties and parties without the police coming ... For the acoustics - use strongly folded curtains and acoustic panels where possible. Cornice). Where you have to split the centimeter in two - cork as thick as possible (although it is expensive and is glued with nasty glue, like Proma ..). that (in terms of acoustics) you can only process one of two parallel walls (or a pair of sub-ceilings). Foam generally doesn't work. There is a special acoustic one - with open pores (so that the sound penetrates and dissipates into it), but it is a weak brandy. For the floor there are also various acoustic and insulating materials, up to 1 cm thick, which you can put under the carpet, but the small thickness is a prerequisite for a poor result (no matter how "magical" the material is otherwise) ...
How to soundproof a bell? a minimum of 10 cm layer of insulation on the six walls in the room can also work. To further reduce the volume of small rooms.
Cork is a good solution, but quite expensive. Glues as wallpaper, then primer, putty and paint. A thickness of 5-6 mm is sufficient.
I am also in such an apartment. We soundproofed with stone wool and plasterboard. The windows are the same as yours. The solution was to leave a niche with thinner insulation in which to open the window. We also insulated the door and it became 10 cm thick, but it has an effect. I don't know about cork, but rock wool works. And it is incombustible.
I'm Number 1 again. Yesterday I forgot to add: there are many new materials that can optimize the achievement of optimal insulation and acoustics. For example, you have a very nice one called Heraclitus (I see it now called CELENIT) - these are sawdust, 0.5-2 mm wide and 15-20 cm long, pressed and glued with a little cement, and treated so as not to burn. The panels are between 1.5 and 2.5 cm thick and have dimensions of 60x120 cm. They are quite beautiful for wall or ceiling cladding. They have excellent acoustic and good sound insulation properties. Here are some photos - see the gallery: https://www.di-tradebg.com/bg/produktov-katalog/zvukoizolacia-za-steni-i-tavani/panel-ot-darveni-ploskosti-celenit The most aesthetically pleasing those that have edging on the side (bevel at an angle of 45 'along the edges) and pass them at 50% (like a brick wall). Here you can see how it turns out: http://www.etheraudio.net/wp-content/gallery/etheraudio_atashov_audio_system/dsc_2731_0.jpg In general, look at the site of De Trade and especially the section "Soundproofing and acoustics" with its subsections. There are interesting suggestions. Here is an example of a very nice material: https://www.di-tradebg.com/bg/produktov-katalog/zvukoizolacia-za-steni-i-tavani/trisloen-zvukoizolacionen-panel-seria-Rewall-53 Kauchukovata membrane extinguishes particularly well low frequencies (boom, rumble). The thickness is also good - 40 mm. It is hardly as effective as 10 cm of stone wool, but for "economical" (in terms of size) sound insulation is possible. And on top of that, if you hit it with a thin cork, enough to fix the acoustics - there will be no price. This is suitable for laminate flooring: https: //www.di-tradebg. com / bg / produktov-katalog / zvukoizolacia-za-podove / zvukoizolacia-za-pod-darveni-nastilki-seria-Sylwood-3 Tova - za pod moket: https://www.di-tradebg.com/bg/produktov -catalogue / zvukoizolacii-i-akustika / zvukoizolacia-za-pod-moket-i-sintetichni-nastilki-Sylpro If you combine the above two, your floor will become extra. And if you put a shaggy carpet on top, to improve the acoustics - straight 6. BTW, if you line the ceiling with Celenit 2.5 cm, your windows will be able to open :) Under it (between the ceiling and it) you can stick even from this: https://www.di-tradebg.com/bg/produktov-katalog/zvukoizolacia-za-steni-i-tavani/zvukoizolacia-za-steni-seria-mustwall It will get even better. com / bg / produktov-katalog / zvukoizolacii-i-akustika / zvukoizolacia-za-pod-moket-i-sintetichni-nastilki-Sylpro If you combine the above two, your floor will become extra. And if you put a shaggy carpet on top, to improve the acoustics - straight 6. BTW, if you line the ceiling with Celenit 2.5 cm, your windows will be able to open :) Under it (between the ceiling and it) you can stick even from this: https://www.di-tradebg.com/bg/produktov-katalog/zvukoizolacia-za-steni-i-tavani/zvukoizolacia-za-steni-seria-mustwall It will get even better. com / bg / produktov-katalog / zvukoizolacii-i-akustika / zvukoizolacia-za-pod-moket-i-sintetichni-nastilki-Sylpro If you combine the above two, your floor will become extra. And if you put a shaggy carpet on top, to improve the acoustics - straight 6. BTW, if you line the ceiling with Celenit 2.5 cm, your windows will be able to open :) Under it (between the ceiling and it) you can stick even from this: https://www.di-tradebg.com/bg/produktov-katalog/zvukoizolacia-za-steni-i-tavani/zvukoizolacia-za-steni-seria-mustwall It will get even better.
Success with the repair. Until then, better quality foam earplugs can be found in pharmacies, at least you can sleep peacefully.