The sound insulation performance of glass curtain walls depends on many factors. Generally speaking, its sound insulation effect has certain limitations, but it can be improved through reasonable design and material selection.

Under normal circumstances, the sound insulation performance of simple ordinary glass curtain walls is relatively weak. This is because ordinary glass has limited sound blocking capabilities, especially for mid- and low-frequency sounds, which are not ideal.

However, the sound insulation performance of glass curtain walls can be improved if the following measures are taken in the design and construction of glass curtain walls:

1. Use multi-layer glass: such as insulated glass, laminated glass or insulated laminated glass combination. The air layer in the middle of the insulating glass can weaken the sound transmission, and the film in the middle of the laminated glass can absorb part of the sound energy.

 For example, double-layer insulating glass has a much better sound insulation effect than single-layer glass and can effectively reduce the incoming external noise.

2. Increase the thickness of the glass: Thicker glass has a relatively stronger blocking effect on sound.

 However, it is not significant to improve the sound insulation effect simply by increasing the thickness, and it usually needs to be used in combination with other measures.

3. Optimize the curtain wall structure: Ensure that the frame and sealing performance of the curtain wall are good to reduce the possibility of sound transmission through gaps.

 The quality of the sealant and the installation process will affect the overall sound insulation effect of the curtain wall.

4. Cooperate with other sound insulation materials: Use sound insulation materials between the curtain wall and the main structure of the building to enhance the sound insulation effect.

If the glass curtain wall is properly designed and constructed, its sound insulation performance can meet certain requirements. But there may still be a gap compared to specialized soundproof walls or windows.

For example, if an office building located next to a busy street adopts an ordinary single-layer glass curtain wall, the interior may be significantly disturbed by traffic noise; but if a high-quality multi-layer sound-insulating glass curtain wall is used and well sealed, the indoor noise will be reduced. It will be significantly reduced, providing a relatively quiet office environment.