How do they reduce noise pollution?
The first factor is laminated panes. Soundproof windows employ glass coated with an inner layer of plastic, which stops noise vibrations.
The second factor is the air space between the existing window, which is located at the exterior wall, and the new soundproof window, which is mounted in the window sill, about 1.5” in from the existing window.
This isolates the soundproof window frame from vibrations. The dead air also cuts down on vibrations.
The best soundproof windows also spring-load the seals in the frame, putting a constant squeeze on the glass panels. This prevents sound/air leaks, and acts to stop noise from vibrating through the glass.
Recall the last time you rang a tuning fork, and then gripped it with your fingers to stop the ringing? The same principle applies to the spring-loading of the seals in the frame.
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Posted in How It Works