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How to Improve Home Sound Insulation with Windows

07 September 2023

When it comes to creating a comfortable and quiet environment inside your home, sound insulation is a key aspect to consider.

External noise, such as road traffic, noisy neighbours or noise from nature, can be a source of stress and disturb our peace of mind. In this context, windows play a crucial role in ensuring adequate sound insulation. In this article, we look at how to achieve good sound insulation with aluminium windows.

Of all the elements that must be taken into account when choosing the ideal window or door, sound insulation is undoubtedly one of the most delicate. Sound waves, in fact, propagate in many different ways, and various measures must be taken to reduce their effect.

In fact, many factors come into play when choosing a window frame for better acoustic insulation: the construction material of the frame, the choice of glass, the installation… All these elements must harmonise with each other to give the frame high acoustic insulation values. For this reason, never before has it been as important as in the case of acoustic insulation to rely on experts who know how to choose the right elements and orchestrate the installation work to achieve a truly effective result.

Why sound insulation in the home is important

Noise is a critical factor that can have a very strong impact on people’s quality of life; this is especially true for people living in cities, near stations or airports, as well as busy streets and nightclubs.

These noises can impede normal daily life at home, with negative consequences on studying, working and relaxing. But it is especially the night hours that need silence: sleep is a biological need that, if disturbed, can have serious health consequences. Several studies show that noise hinders good quality sleep even if we are not aware of it, causing micro-awakenings that can affect productivity and energy levels. All this can lead to a high level of stress.

It is therefore primarily a question of health, but also of comfort: in the home we want to be able to live without the annoyance of noise from outside, be it from traffic or the neighbourhood.

Sound insulation of windows and doors according to the personal needs

In order to best insulate your home from outside noise, you can consider soundproofing the entire house, but the most important benefit is obtained by installing new-generation windows and doors, equipped with the right elements that make it possible to obtain real noise-proof windows.

Among the elements to consider are the frame material, the choice of the most suitable glazing, and the hardware that can help achieve greater insulation.
The most important thing to pay attention to, as will be seen below, is proper installation by professionals.

Of course, all these elements can also be implemented to a greater or lesser extent on the basis of one’s own needs; those who live in the countryside, for example, will tend to have less urgency for high sound insulation than those who live in the city centre. The first step, therefore, is to assess the context not only on the basis of one’s own needs, but also on the advice given by experts in the field.

In general, the most important thing to remember is that acoustic waves propagate through the air: even the slightest crack will be enough to let the noise pass through and thus wipe out the investment made. For this reason, it is essential to insulate the window completely – frames, glass, seals – in order to prevent even the slightest passage of air.
It can therefore be said that thermal insulation and acoustic insulation of windows go hand in hand: it is necessary to work on a truly effective sealing of windows, to avoid both heat loss and the passage of noise.

House acoustic insulation: choosing the right windows

To achieve maximum living comfort, windows and doors must guarantee a high level of sound insulation, which is measured by the RW value, which is expressed in decibels (dB), and is obtained from the synergy between the different elements, such as glass and frame.

Aluminium windows and doors and sound insulation

With thermal insulation, the aim is to eliminate so-called thermal bridges, which cause heat loss and consequently lower energy efficiency. Similarly, in terms of acoustic insulation, the aim is to eliminate so-called acoustic bridges, which cause annoying noise to enter the home.

In this, thermal break aluminium windows do an outstanding job. They exploit the mass/spring principle – that is, the relationship between the aluminium frame and the part inside the frame, which constitutes the thermal break – to reduce noise. Thermal break, in fact, is useful not only to keep the house well insulated thermally, but also because it has a strong soundproofing and noise-absorbing power.

In addition, aluminium has many other advantages that have a positive impact on sound insulation. As it is a very solid material, it does not warp and is perfectly resistant to the wear and tear of time, so it hardly lets air through and, therefore, noise. Compared to PVC, aluminium lasts many more years without sagging or warping. Aluminium window frames are therefore ideal for noise-proof windows and maximum soundproofing of the house over time.

The choice of glass for acoustic insulation

A large part of the window surface is made up of glass, so it must be chosen so that it provides adequate sound insulation.

It is possible to equip your windows with acoustic glass (double or triple), as well as laminated glass of different thicknesses. This helps to improve the acoustic insulation performance of the window frame.

The greater the thickness of the glass panes (hence their mass), the greater their ability to attenuate the passage of noise from outside. However, it is necessary to find the right compromise between the thickness of the panes and their weight, to avoid making the entire window too heavy; in this case, it is better to choose aluminium frames that are able to support large weights without the need for reinforcements.

The most important thing is to ensure that the choice of glazing is in total harmony with the windows, gaskets and all other elements of the window. It is also important to choose the same glass for all windows, otherwise you risk creating a discontinuity within the house.

Ensuring sound insulation of windows with the right installation

The installation has a very important impact on the sound insulation of windows. Excellent materials, perfect gaskets and triple glazing can also lose all their insulating properties if the window is fitted in the wrong way. In fact, in this case, the installation joint could become the window’s weak point, allowing air and, consequently, noise to pass through.

This is something that one absolutely cannot afford in order not to nullify the properties of aluminium and glass, so the installation must be planned and carried out with the utmost professionalism, by experts in the field.

Aluminium window frames METRA Building: best window frames for acoustic insulation

When looking for a solution to eliminate noise and achieve excellent soundproofing of the home, relying on window and door professionals becomes essential. METRA Building dealers follow their customers from design to installation, ensuring that the entire process of making and fitting windows and doors is studied down to the smallest detail.

METRA Building aluminium windows and doors boast specific technologies for the reduction of noise and heat dispersion. METRA Building products are made from 100% recyclable aluminium and guarantee excellent performance from multiple points of view. To further increase the acoustic and thermal insulation level of the house, state-of-the-art entrance doors and shading systems are also available.

Finally, the installation system of METRA Building windows and doors is carried out perfectly, balancing all the elements to ensure maximum living comfort. This innovative system, called Posa Clima, ensures the highest level of thermal and acoustic insulation, as well as having numerous other positive features: it is recyclable, fireproof and easily painted.