Experts use a rating system called Sound Transmission Class, or STC, to rate how well a structure reduces the amount of sound entering the space. In the United States, this integer rating is widely used for ceilings, floors, partitions, walls and windows.
In today’s post, Renewal by Andersen® of Denver, your local window company, discusses how our windows comply with STC ratings to keep your interior free of outside noise.
The ratings range from 18 to 38. The overall rating is determined by the material’s ability to stop noise at 18 different frequencies, all measured in decibels. For single-pane windows, the average STC is between 26 and 28. The differences are caused by the thickness of the glass and how airtight the window is.
In short, STC gives you an idea of how much sound a material might stop. However, even if it is a common measurement tool, it is still limited and should not be the only basis for real-world soundproofing expectations.
How to Find STC-Rated Windows
If you are reading this in hopes of finding replacement windows for your home, you are in luck. Here are some tips on how to pick the right one.
As the name itself suggests, noise-reducing windows prevent exterior sounds from entering your house. This is made possible by the breaking up of sound waves as they bounce off the window. The brand Renewal by Andersen windows achieve this by pairing an impact-resistant glass with a polyvinyl butyral (PVB) interlayer. This leads to better soundproofing because the interlayer has a different density compared to the glass, which better interferes with the sound.
Furthermore, any Renewal by Andersen’s 400-series window has an STC rating of 34, making it an excellent option for soundproofing your home through the use of windows.
Contact us at (303) 823-4312 for any of your window concerns or to have your own Renewal by Andersen windows installed. We serve Denver and nearby areas, bringing only the best service and materials to your home.