Materials that keep silence

The neighbors on the right are watching TV. Downstairs, a wedding is walking. A child runs a floor higher ... No, this is not curiosity - you just live in a house with poor sound insulation. Is it possible to deal with this, and what are the possible solutions?



During the construction of most Soviet houses (with the exception of the so-called "Stalin"), sound insulation paid minimal attention. But the problem has become especially acute in recent years, when in new buildings they began to sell apartments with a "free layout".

New settler gets concrete walls, floor, ceiling and ... a lot of problems that were previously regulated by all kinds of SNIPs and GOSTs, and now everyone solves, to the best of his knowledge of construction technologies. And one of the most important is the problem of sound insulation.

How to deal with noise? You should start with a thorough inspection of the apartment for cracks, seams, technological holes in the ceilings and partitions - they are the main conductors of sound. When viewed, you will probably find interesting discoveries: for example, a hole in the ceiling at the chandelier's mounting point directly connects your apartment with the neighbors from above, a channel punched behind the outlet leads to the same outlet from the neighbor's side, and the battery riser connects the entire staircase vertically.

Sometimes the elimination of these construction defects is enough to isolate the apartment from extraneous noise (fine holes and defects thoroughly putty, larger ones should be pre-filled with construction foam). But still it is better to plaster the walls additionally, closing up microcracks in concrete. After all, the secret of good sound insulation in old houses is not only in the thickness of their walls, but also in a thick layer of plaster (up to 15 cm!) Laid on shingles.

If the measures taken did not bring the desired effect, it is worth taking advantage of the opportunities of sound-reflecting and sound-absorbing materials, which are quite numerous on the market today.
The room should not have unreached surfaces. A suspended ceiling made of acoustic plates, additional wall sheathing, a good floor on the logs, a carpet - all this eats up extra centimeters of volume, but it provides silence and comfort.

The substrate for Polifoam wallpaper is sheets of foamed polyethylene with a cellular structure, duplicated on both sides with special paper. They not only increase the sound insulation of the walls, but also serve as an additional insulation and sound insulator.

Cork - a technical cork made of crushed crust by pressing, is relatively inexpensive, is available in the form of plates of various thicknesses and in rolls and has good sound-absorbing characteristics. It is used mainly as a substrate for laying flooring in a floating manner, but can also be used for soundproofing walls and ceiling ceilings.


 

Mineral (stone) wool is made from rocks: clay, limestone, granite, tuff. Environmentally friendly, breathable and non-combustible material is available in the form of plates consisting of entangled fibers bonded together by a binder. Plates can be cut with a knife or sawed with a hacksaw.

Soundproofing Panel System (ZIPS) - additional soundproofing from sandwich panels and gypsum plasterboard facing sheets. Sandwich panels consist of a combination of dense (gypsum fiber) and light (mineral wool) layers, providing both sound insulation and sound absorption. They are mounted directly on concrete, brick, gypsum partitions or floors, without installing the frame on the screws. In the latest ZIPS systems, vibration-isolating fasteners (8 knots per plate) are provided, which exclude the transmission of vibration through the screws.

 

An acoustic floating floor shields noises transmitted over floors and wall surfaces. When installing such a floor, hard slabs of stone wool are used, laid directly on the reinforced concrete floor. Of them, along the walls, they lay a peculiar edge (the height is equal to the thickness of mineral wool plus the thickness of the concrete screed), and a leveling concrete screed is poured into the resulting acoustic “bathtub” covered with a layer of waterproofing material. Finishing (parquet, laminate, linoleum) is laid on top of the screed according to the laying technology.

False acoustic ceiling - many companies offer such systems, but they are quite expensive and do not always solve the problem. The acoustic ceiling saves from airborne noise, but practically does not prevent the shock (steps of neighbors from above or blows by heavy objects). Their installation requires a large space (up to 60–70 cm), which can be used for laying communications, ventilation or built-in lighting. If the height of the room does not allow the use of such a ceiling, try to fix the ZIPS system on the ceiling floor - at least partially it will establish acoustic comfort in the house.

Soundproof flooring on logs is an old proven way to lay parquet. Wooden logs should be about 100 mm wide and 40-60 mm thick, this allows you to lay soundproofing material - stone wool or its analogues in the space formed under them. It is undesirable to use polystyrene in residential premises: it has low soundproofing properties. To enhance the effect between the lags and the concrete floor, an elastic tape soundproofing substrate is laid that protects against shock noises.

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