Secondary Glazing Noise Reduction

Secondary glazing offers a great cost-effective solution for noise reduction in properties. This page lists some of the more technical aspects of this side of secondary glazing.

WE WOULD EXPECT TO ACHIEVE THE FOLLOWING SOUND REDUCTIONS AS FOLLOWS DEPENDENT ON THE PRIMARY WINDOW BEING IN GOOD CONDITION.

For the traditional and heritage opening ranges:

4mm - 100 -  4mm                      40-42
4mm - 150 -  4mm                      42-43
4mm - 100 -  6mm Float             42-43
4mm - 150 -  6mm Float             45
4mm - 100 -  6.4mm Lam          44-45
4mm - 150 -  6.4mm Lam          45-47
4mm - 100 - 6.4mm Stadip        46-47
4mm - 150 - 6.4mm Stadip        47-48

- If the air gap is increased from 100 to 150 (50% increase) then the sound reduction is increased by approximately 25%.

- If an increase of 3dB is achieved then this reduces the sound coming into the room by half.

At an install in Park Lane we achieved the following;

4mm – 180 air gap – 6.4mm Stadip = 52dB reduction.

Estimated figures from Solaglass when using 6.4mm laminate with 6.4mm Stadip Silence.

6.4mm lam   100mm air gap
4mm lam   150mm air gap  would expect to achieve between 46-50.

You can read more about Omegabuild secondary glazing solutions here >