Soundproof splints can be installed for the sound insulation of the walls. The specific construction method is as follows: First, hit a 1 to 2 cm thick wooden keel on the wall and put asbestos inside. The gypsum board is laid on the outside of the keel, and the putty is applied on the plasterboard. It should be noted that asbestos should not be spread too thick, otherwise it will affect the noise reduction effect.
Sound insulation on the upper and lower floors must be installed with soundproof ceilings. The ceiling is made of a 5 cm plastic foam board for sound insulation and is directly attached to the ceiling. On the side of the ceiling, you can tie some irregular holes (but don't puncture) to increase the sound absorption. Make a ceiling under the foam board, and keep the ceiling at a certain distance from the foam board.
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