Why You Need to Know What STC Is

In many cases, less noise will be coming through the Soundproof Windows than the walls. Most walls have an STC of 43-48, and our windows have an STC of 48-54. Soundproof Windows can go even further, with a few extra tricks up our sleeves, and several things can be done to increase the window STC values even more.

STC stands for Sound Transmission Class.

Basically, STC ratings are an established way to average how much sound is stopped by something. STC ratings are used for windows, doors, walls and most building materials. For windows, STC ratings range from 18 to 38.

We’ve talked in previous blogs about soundproofing windows, how easy they are to install and their STC ratings, but why do we include the rating?


An STC Rating is the rate of how well a building handles airborne sound. So, things like interior partitions, ceilings, floors, doors, windows and exterior wall configurations all utilize the STC rating system. It’s important to understand what an STC rating is, as it will give you insight into how much noise your window will actually block.

Soundproof Windows can provide soundproof sliding doors and soundproof windows that will end your noise problem for good, with an STC rating that is the highest offered on the soundproofing market today. More often than not, noise is let in through your windows not your walls, and by installing a soundproof window in your home, office or studio you will reduce the noise in your building by 95%.

A Soundproof Window will reduce noise levels by 75-95%. Our soundproof windows will reduce noise levels significantly which is not possible with dual pane or replacement windows.


Adding Soundproof Windows will:

  • Reduce or stop window condensation problems
  • Reduce condensation similarly to dual pane windows

Window condensation is a difficult problem to predict, solve or guarantee. Entire books have been written about condensation, its various causes and how to prevent it. Soundproof Windows will significantly reduce your window condensation, and in many cases may stop it completely.

Do you want to stop noise for good? Do you want to finally sleep soundly – without airplane, traffic, and animal noises? Then it’s time to contact Soundproof Windows, today.