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How to use uPVC windows to be more soundproof?


Nowadays, with the improvement of living standards, people pay more and more attention to the quality of living environment. A good home sound environment is the guarantee for all families to get quality sleep, get enough rest, and enjoy a happy entertainment life. Therefore, in home decoration, sound insulation performance has generally been regarded as an important consideration.

When it comes to home improvement sound insulation, we have to mention the sound insulation of uPVC windows. Because we all know that uPVC windows are the weakest link in building sound insulation. When evaluating the sound insulation performance of a building, the decisive factor is the sound insulation amount and the usable area of ​​the weakest component. Therefore, in order to achieve good results with the best cost-effectiveness in building sound insulation, the principle of equivalent sound insulation must be followed. Generally speaking, the sound insulation performance of wall, floor, uPVC windows and other components should be basically the same. Otherwise, there will be a barrel effect, and the sound insulation of one component will not be strong, and the overall sound insulation of the building will be greatly reduced. And uPVC windows are usually the weak sound insulation components. However, for the needs of lighting, ventilation, and viewing, the existence of uPVC windows is still very necessary. So how to make uPVC windows soundproof, here are some methods to share with you.

1、The first is to choose the glass

This is the top priority, and it is easy to understand, because the glass area is basically the area of ​​uPVC windows, and the sound insulation performance of glass is not good, how can the sound insulation of uPVC windows be so good. So how to choose glass, direct dry goods without bending, choose laminated glass. Many people think that the sound insulation effect of insulating glass is good. Unfortunately, this understanding is wrong. For glass of the same thickness and weight, the sound insulation effect of insulating glass is the worst, even better than ordinary glass, and the sound insulation effect of laminated glass is three. optimal. Laminated glass can also be combined with ordinary glass or laminated glass of different thicknesses to form the structure of insulating glass, which can not only play the sound insulation advantages of laminated glass, but also have the characteristics of good insulation effect of insulating glass.

Another kind of glass with good sound insulation effect is vacuum glass. Why not recommend it? On the one hand, it is difficult for ordinary people to identify the quality of this kind of glass. Vacuum glass is only close to vacuum, not absolute vacuum, and some even use inert gas instead of vacuum surroundings. Secondly, the distance between the two pieces of vacuum glass is very small, and there are some fine support columns between the glasses, which are very easy to form resonance, thus losing the advantage that vacuum glass has no air-borne noise. In addition, due to the working principle of vacuum glass negative pressure, the impact resistance is poor. Finally, it is the question of cost performance. The complex process makes the price of vacuum glass at a high level, which is not close to the people.

2、uPVC windows profiles can not be ignored

A good horse with a good saddle can complement each other. In fact, the sound insulation performance of the commonly used profiles is good, but the sound insulation effect is superior in two aspects. The first is airtightness. The gap has a huge impact on the sound insulation effect. The gap area accounts for more than 1%, and the sound insulation does not exceed 20dB. The gap area accounts for more than 1‰, and the sound insulation does not exceed 30dB. The importance of effect to sound insulation performance. Therefore, a good sound-insulating uPVC window profile should have no less than two sealing stops and sealing strips, and when the uPVC windows are closed, the profile bites tightly, there is no obvious gap, and there is no shaking when pushing and pulling. The second is the sound bridge partition. For uPVC windows profiles with good sound insulation performance, there should be elastic isolation cushions between the multi-layer glass, between the glass and the profile bayonet, and between the profile and the profile occlusal surface, so as to avoid rigidity. connected to form a sound bridge. In general, broken bridge aluminum is recommended for uPVC windows profiles. Broken bridge aluminum not only cuts off the hot and cold bridge, but also solves the problem of fast heat transfer of metal materials, and also cuts off the sound transmitted through the rigid structure to a large extent. Bridge, and the sealing performance is also very good. It is a uPVC window profile product on the market that is highly consistent with sound insulation requirements.

After selecting the glass and uPVC windows profiles, the sound insulation effect of uPVC windows is very guaranteed. Under normal circumstances, even in the face of medium and low frequency traffic noise, at least indoor noise can be controlled below 40dB, and in the face of broadband living noise, indoor noise can be controlled below 35dB. Of course, the specific noise control effect also needs to integrate many factors, such as the sound power of the sound source, the spectral characteristics of the noise, the distance between the building and the sound source, and the positional relationship.

The multi-layer hollow structure sound insulation uPVC windows combined with broken bridge aluminum profiles and laminated glass can basically meet the sound insulation needs of building and home decoration. Usually, with different time periods, the external noise environment at night will also improve, which will be significantly lower than that in the daytime. Therefore, after using sound-insulating uPVC windows, the indoor noise can generally reach the target of less than 35dB, which is higher than the requirement in the "Code for Sound Insulation Design of Civil Buildings" that the allowable noise level of residential building bedrooms does not exceed 37dB, which can fully meet the requirements of sleep sound environment. need.

However, there are also some special cases, such as some residential buildings are adjacent to high-noise consumption places (bars, discos, ktvs, barbecues, etc.) that operate at night; some residential owners are noise-sensitive people and have particularly high requirements for the sleeping sound environment. So how to meet the sound insulation requirements of uPVC windows under special circumstances? Using double-layer uPVC windows is a good method, but it is not the best method. Double-layer uPVC windows structure, usually used for sound insulation renovation projects, is to add a layer of professional sound insulation uPVC windows when the sound insulation effect of the original ordinary uPVC windows is not good. If the original one is a professional sound insulation uPVC windows, adding a layer of uPVC windows will make the cost performance very low. Although double-layer uPVC windows have better sound insulation, it is also cumbersome and inconvenient during use. The recommended method is to use professional sound insulation uPVC windows with a noise reduction curtain. A noise reduction curtain should be composed of a multi-layer structure, including at least one layer of sound absorption, one layer of sound insulation, and one layer of shading layer.

It must be noted that the noise reduction curtains are used to assist the sound insulation of uPVC windows to solve the problem of missing a door. If the sound insulation effect of uPVC windows itself is not good, relying on noise reduction curtains for sound insulation alone will put the cart before the horse, and you are destined to not get the desired sound insulation effect. For example, the sound insulation effect of sound insulation uPVC windows is 98 points. The purpose of noise reduction curtains is to help the sound insulation effect of sound insulation uPVC windows to increase to 100 points, but if the sound insulation effect of ordinary uPVC windows is only 50 points, then even if you use Noise reduction curtains may not be able to reach the passing line of 60 points. But don't underestimate the assisting effect of noise reduction curtains. High scores and full scores are not the difference between a few points, but the difference between two different realms. Just like noise compliance and inaudible noise are two different concepts.

Since the sound insulation follows the mass effect, the greater the areal density, the higher the sound insulation performance, and the sound insulation performance increases by 6dB for each doubling of the weight. The use environment and method of curtains cannot be made of heavy materials, so it is destined to not be used as the main component of sound insulation. It is necessary to rationally view the sound insulation effect of noise reduction curtains and use them rationally.

The data shows that the transmission loss of noise reduction curtains is greatly improved in the mid-high frequency above 500Hz. Although there is a trough at 3500Hz, there is still a transmission loss of 18dB; while the mid-low frequency below 500Hz does not exceed 10dB. In addition, the measurement environment in the laboratory is more ideal, and it is different from the actual living environment. Therefore, in general, the noise reduction curtains can deal with medium and low frequency traffic noise, and the insertion loss is 5-8dB (A). The loss is 8-12dB(A), which should be more practical.

For uPVC windows with high sound insulation requirements, you can also use uPVC windows sound insulation stickers. Compared with soundproof curtains, this product has better sound insulation effect. Of course, soundproof curtains first play the role of curtains, sound insulation is an auxiliary function, and the main function of uPVC windows sound insulation stickers is sound insulation. Due to the Velcro bonding and fixing method used in uPVC windows sound insulation stickers, it is not suitable for uPVC windows that need to be opened and closed frequently, as well as large areas of uPVC windows; it is more suitable for small uPVC windows with targeted sound insulation and noise reduction requirements.

Finally, I would like to emphasize another important part of uPVC windows sound insulation, that is, the installation process. Don't let the installation details ruin our sound insulation engineering results, and let the sound insulation and noise reduction products take the blame. A good product also needs a good installation process, both of which are indispensable. Here are some requirements:
1. The sealing between the uPVC windows profile and the uPVC windows hole must be done well. When the pores are large, it is opposed to filling with a foaming agent. It must be filled with cement mortar, and then sealed with weather-resistant sealant on both sides of the profile.
2. Select the matching brand for uPVC windows hardware accessories. The installation of hardware accessories should be precisely matched with the uPVC windows profiles, and there should be no looseness. Do not open unnecessary holes on the uPVC windows profiles.
3. The size of the curtains should be larger than the uPVC windows holes, and at least 200-300mm of margin should be left on each side, especially for 2 or more butted curtains. In order to ensure good sealing of the butt joints, sufficient margin should be left; try to install as much as possible. Install close to the uPVC windows hole wall to improve the fit with the wall.

Baydee uPVC windows use a multi-channel sealing system, which greatly increases the difficulty of noise passage. The polymer composite profile has a low-conductivity material and a multi-chamber structure design, which is easier to absorb sound waves and has better sound insulation performance. Baydee uPVC windows constantly adapt to market demand and development, adopt high-performance energy-saving technology, and have won the recognition and praise of consumers with excellent quality, high-quality service and good reputation in the industry. If you are looking for a more soundproof uPVC windows, then Baydee uPVC windows are your best choice.