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STC Ratings

Image of glass office walls with text - STC Ratings of Glass

STC Ratings of Glass

Editor’s Note: This blog post was originally published in February 2019 and has been revised to reflect industry updates.

Sound Transmission Class (STC) ratings for glass range from low to almost soundproof. While glass alone is simply a faint noise insulator, additional fabrication processes can be implemented to improve performance and noise reduction, such as lamination, double-glazing, or a combination of the two. 

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