If you want to increase the sound insulation of windows and doors, you may want to use the following tips:
1, plus do plastic windows. If the window sill itself is relatively wide, you may wish to install a layer of good sealing plastic steel windows on the inside or outside of the original window, the empty space between the windows is recommended to be more than 10cm, this approach applies to outdoor traffic noise is not particularly serious situation, and the cost is relatively low.
2, installed seal. This method is mainly for the sealing of the relatively poor doors and windows, after adding the seal, the doors and windows of the seal is better, can block the noise into the room, the equivalent of the noise transmission to add a layer of barrier, so to a certain extent can play the effect of sound insulation.
In short, there are many ways to increase the soundproofing of doors and windows, it is recommended that we combine their own actual situation to choose.