For quieter, more comfortable environments

Glass made with new DuPont™ SentryGlas® Acoustic™ interlayers protects more than just people and property. It also protects quality-of-life by making interior spaces quieter and more comfortable.

Compared with monolithic glass of the same thickness, laminated safety glass made with a SentryGlas® Acoustic™ interlayer reduces mid-frequency noise sensation by about one half.

That means better value for residential consumers who want to enjoy television, music, or just quiet times at home. It means more professionally designed theater and entertainment venues. And improved privacy spaces, for home-based businesses, medical clinics, counseling rooms or professional practices.

Less noise, less stress

Studies show that people are more productive, more creative and more comfortable ... even healthier! ... when unwanted noise is reduced. Locations for acoustic safety glass include:

• Near airports and runways
• In congested urban areas
• Along highways or rail corridors
• Adjacent to power stations or industrial plants
• Next to fire stations or emergency service facilities
• In schools and libraries

At frequencies of about 900 Hz and above, glass made with DuPont™ SentryGlas® Acoustic™ interlayer reduces sound transmission by as much as 10 decibels.

Improved privacy

Even when outside noise is not a nuisance, acoustic performance inside a room or building can be highly valued for comfort or privacy. Examples include:

• Health clinics and medical care centers
• Psychological counseling or family service facilities
• Private practices such as accounting, legal, and estate planning or investment
• Meeting and conference rooms, boardrooms
• Customer service rooms and managers' offices at banks, real estate or development firms, law firms

How it Works

Traditional glass is a leading source of unwanted noise transmission in buildings. Laminated glass made with DuPont interlayers not only creates a layered barrier to sound, it also creates internal surfaces within the glass, where manufacturers can add energy-efficient, low-emissivity coatings or weather-protected aesthetic treatments.

With the development of SentryGlas® Acoustic™ interlayers, DuPont has raised the acoustic performance of glass to new levels while preserving other benefits associated with lamination.

The new interlayer focuses on sound deadening (damping) performance at frequencies most objectionable to humans: in the range of 1,000 to 3,000 Hz. Examples of noises that fall within this frequency range include:

• jet engines
• tire noise, especially on wet pavement
• electrical motors, fans, blowers
• lawn and garden equipment
• dogs barking
• musical instruments
• human voices

By reducing the transmission of these noises through glass, DuPont™ SentryGlas® Acoustic™ interlayers significantly improve glass performance as a sound barrier.

For comprehensive noise control design, proper glass selection is typically accompanied by attention to the materials and insulators used in window framing and attachment systems.