The world has become a noisy place for many urban home owners. So much so, that the there is an ever-growing need for Acoustical Windows. If you are fortunate enough to live in a rural area you may not be exposed to the noise levels found in today’s big cities. The problem is, most Americans live in bustling metropolitan areas so they can be close to their place of employment. Residents in these areas are subjected to non-stop noise from busy airports, semi-trucks travelling down jam packed interstates, and the ear-piercing sound of emergency response sirens in the middle of the night. They call it progress!
Not to worry, Priced Rite Windows has the solution. When you’ve had your fill of excessive outdoor noise and you have lost enough sleep give us a call. While we can’t eliminate the ambient noise completely, we can substantially lower the transmittance of outdoor noise by replacing your old windows and installing new, energy efficient, acoustical windows in your home. We can reduce your energy cost and reduce intrusive noise levels at the same time.
What are Acoustical Windows
Acoustical windows are much more than just a thicker slab of glass. It’s the construction of the window assembly that produces the difference between standard windows and acoustical windows which are specifically designed to reduce the transmittance of noise. Here are just a few of the design criteria:
Thicker Glass: Okay you caught me. This sounds like I am contradicting my own earlier statement about the thickness of glass. However, thicker glass will contribute to the STC Rating of acoustical glass while working in concert with other design elements.
Air Gap: The air gap between the 2 sheets of glass should be greater than that of conventional windows.
Lamination: Laminated assemblies of varying thicknesses will absorb sound better than 2 pieces of identical glass, as two dissimilar thicknesses will transmit noise at different rates.
Frame Materials: The frame of an acoustical window will be constructed using heavier material. Additionally, any gaps will be completely filled with some form of insulation.
Package all of these elements together for a noticeable improvement in noise reduction, however, no acoustical windows can block all noise, at all levels. Well not any windows that would be cost effective to manufacture anyway. About the best you can hope for, is a 90 to 95 percent reduction in the noise transmitted through your windows. That’s still a very substantial drop in the noise level, and enough to get a good night’s sleep. The problem is not all sounds are created equal. For instance, a small bird chirping in the early morning emits a high-pitched sound that is fairly easy to dissipate. Conversely, a giant dump truck or trash compactor will emit low frequency noise that is far more difficult to block.
STC Ratings of Acoustical Windows
Without getting too deep into the science of measuring noise loss, suffice it to say that the STC Ratings of windows (Sound Transmission Class) is a measurement of how soundproof a window assembly is. The larger the value, the better the noise isolation. Typically, a single pane glass window will have a rating of 26 to 28, while the same type of window in a dual pane configuration will be more like 28 to 32. Compare this to our acoustical windows which have values in the 40 to 46 range.
A word of caution here. The STC Ratings are based on a logarithmic scale. Meaning when you add two windows together, the STC Rating will not double. The scale is not linear. You may be quite surprised if you stack two windows together, each with an STC Rating of 26, only to discover that the result may be a rating of only 28 or so, not 52. There truly is a science to this.
Priced Rite Windows can provide acoustical windows to help you with your noise abatement problem contact us via email or give us a call today at 773-836-9999