When choosing soundproof Windows, avoid detours!

Today, let's talk about how to choose the glass for soundproof Windows.

The most crucial aspect of soundproof Windows is the selection of glass. Glass takes up the majority of the area of doors and Windows. With so many types of glass available on the market, how should one choose?

Insulating glass: It utilizes air to partially absorb the energy of medium and high-frequency sound vibrations, thereby reducing the sound level of sound waves. The sound insulation effect of insulating glass is related to the thickness of the glass, the gas composition of the spacer layer, the number and thickness of the spacer layer.

This kind of insulating soundproof glass has a very good sound insulation effect on high-frequency noises, such as the sounds of people speaking and the high-pitched horns in schools. Most of the broken bridge aluminum doors and Windows on the market are made of insulating glass.

Laminated glass: The film in the middle acts as a damping layer. It mainly utilizes the property of the PVB adhesive layer to absorb medium and low-frequency sound waves to suppress the vibration of the glass and achieve a sound insulation effect. The performance is related to the actual thickness of the glass, the thickness of the laminated film and the flexibility of the laminated film.

Here is a point worth noting: In the cold winter, the laminated layer of laminated glass will lose its elasticity due to the temperature (chewing gum in winter freezes like an ice lolly), thus greatly reducing the noise reduction effect.

Moreover, the poor heat insulation of single laminated glass is also a factor that needs to be considered when choosing doors and Windows. Single laminated glass is mostly used on the top of sunrooms and rarely on door and window glass.

Laminated insulating glass: It combines the functions of the above two types of glass. The various noise sound waves outdoors are gradually attenuated after passing through the air layer and the rubber layer. Especially when the noise passes through the rubber layer, the medium and high-frequency noise is absorbed, distorted, vibrated and attenuated, which can eliminate about 95% of the noise.

Whether it is high-frequency sound insulation (such as speaking, honking, and car horns) or low-frequency sound insulation (such as train sounds, airplane sounds, and engine sounds), the effect is very good.

Vacuum glass: Everyone knows that in a vacuum environment, the transmission of sound lacks a medium, achieving a sound insulation effect.  Although vacuum glass can theoretically completely block out noise;

However, the vacuum glass currently available on the market, due to the addition of a large number of transparent support bases (equivalent to solid media) during the production process, provides a shortcut for the transmission of sound waves, significantly reducing its sound insulation capacity.  This makes the expensive vacuum glass seem to have a very low cost performance.

When actually using and purchasing, you also need to consider factors such as cost performance and thermal insulation.  The general recommended sequence is: insulating laminated glass/double-layer insulating glass > insulating glass (filled with inert gas) > laminated glass > vacuum glass.

In addition to the type of glass, it is also necessary to clearly check the brand of glass provided by the manufacturer.  The quality of glass greatly affects the sound insulation effect.  The brands of doors and Windows on the market are of mixed quality.  If you want to ensure the quality of the double-layer insulating glass of doors and Windows, it is best to choose those with the 3C certification mark.

For high-rise buildings, floor-to-ceiling Windows, or Windows with large areas of glass, it is advisable to choose double-glazed glass with a thickness of more than 5mm on both sides.