The degree of sound insulation of sewer pipes
When choosing a soundproofing material, first of all, you should pay attention to the level of sound absorption. It is listed on the product label.
The higher the score, the better. However, the material with the highest rate may also be the most expensive. In order not to spend extra money, first you need to decide what degree of isolation you want to achieve.
The choice should be made, focusing on the noise level in the sewer pipe. For indoors, a sound level of 20 dB is acceptable. 40 dB is considered high sound insulation.
It is necessary to remove not only audible, but also sounds that are not distinguishable by the ear (i.e., infrasound).
The essence of soundproofing sewer pipes
Residents of the first floors hear how the neighbors from above drain the water in the toilet, because the lower the floor, the higher the speed of the falling water in the sewer drain and the worse the sound insulation of the sewer riser.
Residents of apartments hear various noises - structural, air and shock.
Percussion sounds are sounds that appear when water interacts with the walls of the tubes. In such a situation, the streams of water leaving the water pipe crash into the walls of the sewer pipes and create noise of a certain level.
Airborne noise is the sound that occurs when water passes through air in a tube. Unlike percussion, such noise is not audible.
Structural sounds are those noises that pass through the walls of pipes, houses, inter-apartment floors, etc. In this case, the sound insulation of the sewer pipe is severely disturbed.
Get rid of impact and airborne noise however, it is possible to reduce the level of structure-borne noise.
As a result, the soundproofing in the toilet is broken: all the noise from the neighbors above - draining water from the toilet bowl and others - in most cases are transmitted to the residents on the ground floor through sewer risers, ceilings, etc.
A few decades ago, sewer risers and piping in apartments were cast iron - and as a result, the sound insulation of sewer pipes in the apartment was good.
In such a situation, the following problems arose:
it was impossible to dismantle the sewer piping system. It was not easy to disconnect the tubular product and clean up debris - when disassembling 1 connection, the installer or tenant of the apartment spent 60 minutes.
In such a situation, the installer first removed a special cement putty from the neck, and then burned the sealant with a soldering lamp;
- the assembly of the sewer pipeline system caused a lot of trouble - sealing the joint with chasing from the side of the wall was a time-consuming process;
- delivery to the right place of a heavy pipe made of cast iron was inconvenient.
However, the cast-iron pipe had 1 advantage: the residents of the first floors did not hear any noise from the sewer riser.
In such a situation, the assembly of the sewer becomes easier, and the sound insulation on the sewer is much easier and faster.
Currently, instead of cast iron, plastic pipes are used in the installation (noise-absorbing sewage). However, PVC pipe products do not save the residents of the first floors of houses from the appearance of various noises and sounds. The fact is that thin plastic conducts acoustic vibrations well.
