Soundproof windows

With heroal soundproof windows, you can reduce the sound level by up to 48 decibels (dB) and make a huge improvement to your quality of living.

Soundproof windows

Optimum noise and sound insulation for windows

Do you live on a busy road or near a railway line? Then you know how irritating it can be when noise gets into your house day after day. With heroal soundproof windows, you can reduce the sound level by up to 48 decibels (dB) and make a huge improvement to your quality of living. In addition to the thickness and mass of the window panes, the window frame and the proper installation of soundproof windows are important factors in effectively reducing the noise level. The principle is that the window should absorb the sound without passing it on to the living space. We will show you when an acoustic window is recommended, how high the sound reduction index and the sound insulation class should be and which properties make a good soundproof window.

What‘s so special about heroal soundproof windows?

100 % foam-filled

The profiles of heroal windows are 100 % foam-filled. The special filling process has been developed by heroal, and provides for ideal sound insulation levels, also for especially slim frames.

Soudproofing up to class 5

Aluminium windows by heroal achieve sound insulation levels of up to 48 dB. This meets the requirements of sound insulation class 5, according to German industry norm DIN 4109. The sound insulation class is the result of the individual combination of frame profile, thickness of glazing and professional installation.

Tailor-made soundproofing

Thanks to the modular design of heroal windows, you can adapt your windows to the sound insulation class you need. You can choose from various sealants and sealing zone designs, face widths and foam fillings.

When are soundproof windows needed?

Ongoing noise is not only irritating, it can also affect your health. For adults, ongoing noise can have an impact on the cardiovascular system. For children, an ongoing high noise level has a significant impact on brain performance. Especially for people who live in a big city, on a busy road or near an airport, it is advisable to protect yourself against noise with acoustic windows. There are no general rules for the volume level that makes an soundproof window necessary. Noise is perceived subjectively, and each person feels a slightly different noise level to be disturbing. In general, however, a level of 55 decibels (dB) or higher makes it difficult to concentrate. Starting at 65-70 dB, there is an increased cardiovascular risk; and starting at 85 dB permanent hearing damage can occur.

Components of heroal soundproof windows

Many factors influence the functionality and performance of an acoustic window. The glass thickness, the space between the panes, the material of the window frame, the construction and the installation of an soundproof window all play an important role in ensuring effective sound insulation.

Which sound insulation class do you need?

The German Sound Insulation Regulation DIN 4109 defines minimum requirements for sound insulation as well as six sound insulation classes to determine the acoustic properties of windows. It is intended for use in comparing various sound insulation measures. The sound insulation classes are determined by the sound reduction index Rw in dB (decibels). The sound reduction index describes the sound insulation of an installed soundproof window. In order to be able to estimate which sound insulation class is required for effective sound insulation, the table below shows sound insulation classes for specific traffic volumes and distances to the road.

Soundproofing class	Sound reduction index (Rw)	Traffic density	Distance of house to the road
1	25-29	10-50 vehicles/h	>35m
2	30-34	10-50 vehicles/h	25-35 m
3	35-39	50-200 vehicles/h	25-35 m
4	40-44	1,000-3,000 vehicles/h	100-300 m
5	45-49	1,000-3,000 vehicles/h	30-100 m
6	>=50	3,000-5,000 vehicles/h	<100 m

However, the required sound insulation for a window also depends on the respective function of the living space. The following values can be used for orientation. During rush hours, the noise level should not exceed 25 dB in a bedroom, when the windows are open, 35 dB in a living room and 35 to 50 dB in a study. When it is time to start making plans for the installation of acoustic windows, the required soundproofing class should be determined in advance with a measuring device. A measurement is best made when the noise level is at its highest. If the noise reaches a value of less than 25 dB in the bedroom, a simple class 1 soundproof window with a sound insulation value of 25 - 29 dB is sufficient. However, if you measure a value of 43 dB, for example, you should opt for a class 4 soundproof window, which provides a sound insulation value of around 40 to 44 dB.

To determine the right sound insulation class for you, it is best to contact an experienced specialist adviser. With our partner search tool, you can find a heroal professional in your area who can determine the sound insulation class you need and install the right acoustic window for you. Find out now about heroal specialist partners near you.

Find a specialist partner now >

Testing soundproof windows

Comparison of windows with and without sound insulation

Test the noise reduction of the sound insulation classes that heroal windows can provide. You can use the slider to simulate the different sound insulation classes. Please turn on your speakers – with sound insulation class 0 the noise should be perceived as unpleasant.

Current sound insualtion class 0

Meaning of sound insulation class

The sound pressure level is reduced by 25 - 29 dB(A), the noise protection is very low.

The sound pressure level is reduced by 30 - 34 dB(A), which results in low noise protection.

The sound pressure level is reduced by 35 - 39 dB(A), which results in moderate noise protection.

The sound pressure level is reduced by 40 - 44 dB(A), the noise protection is perceived as good.

Very good noise protection is achieved by reducing the sound pressure level by 44 - 49 dB(A).

Extremely high noise protection by reducing the sound pressure level by 50 dB(A) or more.

Note: The actual sound insukation may differ from the audio examples.

Delivery and installation of soundproof windows

Proper installation of acoustic windows has a considerable influence on their functionality. Our specialist partners will give you expert advice before you buy your acoustic windows in order to find the right window for you. With professional installation, our specialist partners ensure that your soundproof windows are precisely fitted and sealed to achieve optimum sound and noise insulation values. Use our partner search tool now to search through 3,500 heroal professionals worldwide and find a partner in your area to ensure that your acoustic windows are properly installed.

Find a specialist partner now >

Our solutions for noise insulation up to 49 dB

heroal W 77 HI

Soundproofing class 1 - 5
U_f=0,80
RC 3

heroal W 77 HI >

heroal W 72

Soundproofing class 1 - 5
thermal insulation U_f=1,3
RC 3 (in combination RC 4)

heroal W 72 >

heroal W 72 RL

Soundproofing class 1 - 5
classical roundline contour
Suitable for listed buildings

heroal W 72 RL >

heroal W 72 CL

Soundproofing class 1 - 5
slanted classic line contour
refurbishment of an old building

heroal W 72 CL >

Gallery

Advantages of heroal soundproof windows

Depending on the requirements, heroal soundproof windows can be upgraded as high as sound insulation class 5, which allows them to meet the highest sound insulation demands. Try them out for yourself. We would be happy to give you more information about the right acoustic window for your needs. Give us a call, visit our specialist partners and let us inspire you.