Sound Proof Windows and Doors

Noise pollution is one the biggest problems faced in cities today, particularly in densely populated areas. Unwanted noise can cause sleep loss and lack of concentration. This can lead to a deterioration of health through increased stress levels, headaches, high blood pressure and even loss of hearing.

Noise penetrates windows through leaky seals or vibrations through the window structure. To reduce noise, a window should minimise air infiltration, hold enough weight to limit vibration and allow a large air cavity. This cavity, or air gap, is the key to double glazing.

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Expert Advice

CSIRO Research by John Davy showed an air cavity can effectively enhance sound insulation performance. The larger the air cavity the more noise the window system can reduce. Results show a wide air gap of 100-125mm could improve sound insulation by an average of 7decibals more than windows with a narrow gap of 8-13mm.

Aluplast for Soundproofing

Aluplast window and door frames can reduce noise by up to 47 decibels, which is the same as living next to a major road and hearing nothing when the windows are shut. That’s up to 62% better sound insulation than conventional windows.

Here’s everyone’s favourite pet detective, Ace Ventura, demonstrating this.

Double Glazed Glass for Noise Reduction

Double glazed windows and doors can also greatly reduce unwanted noise from the outside.
Studies have shown that standard double glazing with at least a 12mm gap is effective at reducing medium to high frequencies, such as the human voice.
Low frequency noise like traffic can be reduced by using different thickness of glass in each pane, or incorporating laminated glass.
Double Glazed Glass for Noise Reduction


Is triple glazing my best option in terms of soundproofing?
Unfortunately, no. Triple glazed windows are designed to increase heat saving and do not increase soundproofing. Double glazed windows are sufficient enough for soundproofing your home from outside noise.
Is pane thickness a factor in soundproofing?
The thicker the pane, the better the absorption value. A minimum of 6mm is recommended.
Does space between panes make a difference in soundproofing?
The greater the space between panes, the better the noise reduction.