An STC (Sound Transmission Control) rating is a measure of how well a building product reduces sound transmission.  

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The higher the number, the better job a product does at keeping sound out.

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Many factors impact sound transmission.  In windows, varying the thickness of the two panes of glass or utilizing laminated glass are ways to reduce sound transmission.

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The Coeur d'Alene Window Company offers a standard "sound control" glass package that incorporates 3.7mm glass with 3.0mm glass as an economical way to reduce some sound transmission.

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To the right are test results for some of our popular styles.