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While there’s no such thing as a soundproof window, there are windows that effectively reduce sound. Material and insulation both play a role in reducing sound, but the glass construction has the greatest influence on a window’s ability to dampen noise. The number of panes in a glass construction, their thickness, and the distance between them all make a difference. Generally, the thicker the glass, the better it blocks sound.

Windows that reduce noise

The best option for reducing sound will depend on your budget and priorities. Here are the options you should be aware of:

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2. STC-upgraded glass

We offer a type of window glass option that’s specially designed to reduce sound. It’s called an STC upgrade. STC stands for Sound Transmission Class and is a common sound measurement — find more details in “How to compare soundproofing” below. A window with an STC upgrade combines glass panes with mismatched thicknesses. Making one pane thicker makes it harder for sound to travel through the glass (When the panes of glass are the same thickness within a construction, they vibrate at the same frequency making it easier for the sound to pass).

The STC upgrade is available with 100 Series windows and E-Series windows.

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Up next: Find information about sound performance ratings for our windows

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