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Window Noise Reduction Comparison

Noise Reduction Percentages Can be Misleading

Noise reduction percentages can be misleading, and like statistics, can lie. The basic problem is the human ear. As the environment gets quieter, the ear becomes more sensitive to noise. This means that some of the noise reduction provided is lost.

It is very expensive to get a perceived noise reduction of anything beyond 20% with replacement windows. The maximum available perceived noise reduction still does not exceed 50%. These numbers will not solve a noise problem.

Soundproof Windows do significantly MORE for significantly LESS cost.

Table of Window Noise Reduction

The table below compares the STC Ratings of single pane windows and double pane windows to the STC Ratings of Soundproof Windows combined with single pane and double pane windows.

Single pane window Noise reduction shown as an STC rating using a single pane window STC Rating 26-28
Avg: 27
Soundproof Window & single pane window Noise reduction shown as an STC rating using a Soundproof Window with a single pane window STC Rating 43-49
Double pane window Noise reduction shown as an STC rating using a double pane window STC Rating 26-33
Avg: 28
Soundproof Window & double pane window Noise reduction shown as an STC rating using a Soundproof Window with a double pane window STC Rating 45-54
Two Soundproof Windows & double pane window Noise reduction shown as an STC rating using two Soundproof Windows and a double pane window STC Rating 57+

Soundproof Windows
Double pane window
Single pane window
Sound Intensity
Loud.............Quiet     

How Much Noise Reduction is Enough?

Our experience indicates that 75% noise reduction is sufficient. Our customers feel the noise reduction is very significant - and definitely enough to end the noise 'problem'. No more need to raise voices, adjust TV volumes, or tune out the noise.

Now you can sleep late, enjoy solitude, and reduce stress. In the rare events where the noise levels are really extreme or the sensitivity very high, we can install a third window and absolutely stop the problem, reducing the perceived noise levels beyond 95%. This is very seldom necessary: less than 1/2 of 1% of our customers elect to have a third window.