The space between the doors separating two or three apartments can serve as a resonator and an amplifier.
This happens if one of the doors is made without internal insulation and with a weak frame.
As you know, in the issue of noise protection of the windows play a crucial role. But windows are not only a noise -screen element of the house, but also part of the interior and design. How to find a compromise in this matter? We advise you to install a tree aluminum windows from Finland at affordable prices. These windows will save you from noise and look very beautiful.
The insulation in the door leaf is laid not only for heat, but also for absorbing sounds. Previously, when metal doors were less common, a wooden door was used as a heater and absorber of sounds, which was installed immediately behind the metal, in the same opening. Now there is no such need. There are models of metal doors on which you can apply a wooden canvas from any side. It will perform the functions of insulation and insulation, but hesitates the door.
You can extinguish the resonance effect in the small space by sticking the insulation on one of the walls of the vestibule. The second option – the use of special foam, which, when solidified, creates open bubbles – they reliably absorb the sound. Such foam is used to reduce noise in the car interior. Construction foam, creating closed, filled with air bubbles, holds heat well, but may not absorb the noise. When buying a metal door, you should study the documentation for the product and make sure that the insulation is laid there.
