How to Improve Sound Insulation in Prefabricated Houses

Improving sound insulation in prefabricated houses can be approached from the following aspects:

Selection of Sound Insulation Materials

Adding sound insulation materials to areas requiring soundproofing, such as walls or floors, is a fundamental and effective method. Materials like rock wool and foam boards have high density and good sound insulation properties. Filling these materials inside walls can block sound transmission, reducing the impact of external noise on the interior while also preventing indoor sound from leaking out.

Sealing Cracks

During the construction of prefabricated houses, gaps are inevitable due to the assembly of components. These gaps can serve as channels for sound transmission, reducing the sound insulation effectiveness of the house. Using sealants or fillers to seal these gaps can effectively prevent sound from propagating through them, enhancing overall sound insulation performance.

Sound Insulation Solutions Friendly to Renovation

• Floor and Wall Treatment: Laying flooring on the ground or installing sound insulation panels on walls can enhance sound insulation. For walls, leave gaps when installing keels, fill them with 5cm-thick sound insulation cotton, and then add a layer of sound insulation felt and sound insulation panels to effectively block external noise. If renovation is already complete, empty the wardrobe against the neighbor's wall, insert sound insulation felt between the back panel and the wall, and then seal it with gypsum board.
• Ceiling Treatment: Creating a ceiling夹层 (suspended ceiling layer) can block noise from upstairs. During renovation, add a sound insulation layer to the ceiling, using environmentally friendly damping sound insulation adhesive (about 3mm thick, around 10 yuan per square meter). First, apply it to the original ceiling, then fix it in sections with OSB strips to form the first layer of sound insulation. Additionally, 5cm-thick sound insulation cotton can be added inside the ceiling, which does not affect the ceiling height while effectively absorbing noise from upstairs and downstairs.

Installation of Sound Insulation Doors and Windows

The poor sealing of doors and windows in prefabricated houses is a significant cause of sound insulation issues. Consider installing sound insulation doors and windows at these locations to effectively reduce interference from external noise. For window sound insulation, choose casement windows instead of sliding windows as they have better sealing properties; the profile thickness should be at least 1.8mm to prevent deformation; and double-glazed laminated glass is preferred for its significant sound insulation effect. If replacing windows is not an option temporarily, purchase high-density sealing strips and carefully apply them to all window gaps.

Insulating Water Pipes

The sewage pipe in the bathroom generates significant noise when flushing. First, wrap the sewage pipe with golden damping sheets, then cover it with 2cm-thick sound insulation cotton, and finally seal it with aluminum foil tape to prevent being disturbed by flushing noise at midnight.