Soundproofing and noise cancelling windows are misleading terms. There is no magic solution to 'soundproof' windows that can turn a residential house next to a noisy road, trainline or airport into a silent space.
'Soundproof window' is a false claim – they don't exist!
Everest noise reduction windows with noise reducing glass can make a significant difference in the amount of noise coming through a window to make your home much more peaceful. But, the glass in a residential window can never block out all noise pollution.
How Does Soundproofing Work
Soundwaves need to be absorbed by a dense object, or the frequency of the soundwaves needs to be disrupted to reduce or eliminate sound.
When a soundwave hits glass, the glass absorbs the frequency of the wave, begins to vibrate at the same frequency and then transmits that frequency to the other side of the glass.
Some of the frequency is absorbed by the glass and then the soundwave is reduced as it is transmitted through the other side. But, the glass would need to be thicker than a brick wall if it was to absorb all of the frequency vibrations to stop it from being transmitted.
By placing two panes of glass apart from each other, the first pane of glass absorbs some of the soundwave energy and then is reduced considerably more by the second pane. The wider the gap between the panes of glass, the more the soundwave is reduced.
The most efficient way to reduce noise is to disrupt the soundwaves. Using two different thicknesses of glass close together acts to disrupt the frequency, which reduces the oscillation and vibration. Therefore, reducing the level of noise transmitted.
Everest's noise-reduction windows feature our noise-reducing double glazing unit made of a 6mm Low Iron outer pane and 6.8mm acoustic laminated inner pane. These Everest windows have been approved by the international Quiet Mark award programme.
Everest noise reduction windows work by:
- The thickness of the glass
- Asymmetric thicknesses of glass to disrupt the soundwaves
- Argon gas between the panes
- Depth of gap between the panes
- Sound dampening laminate between panes
Sound is much more difficult to contain than light because a soundwave has a longer oscillation than a light wave and the soundwave can diffract around corners to find its way through any small gaps.
If you have a trickle vent in your window, the sound can travel through the vent. If the seals in your double glazing are degrading and gaps are being formed, the sound can travel through those.
The frame construction and the installation of a window are as important as the glass used.
Total silence and the absence of external noise can be disorienting. An anechoic chamber of absolute silence is generally an uncomfortable space as the ear would begin to hear phantom noises.