The Science of Sound Part IV: How Good is an STC Rating?

Episode IV has always been the favorite of many STAR WARS fans--but today we'll take a closer look at the effectiveness of STC and what the different STC levels mean. Be sure to check out our other "episodes" below.


To give you an idea of the various STC levels, let’s take a look at a scale from 25 to 55. Remember, STC is NOT the LEVEL of sound; it is the amount of privacy afforded.

Still confused? This might help:

An STC rating of 25, is where normal speech can easily be understood. If you want quiet/privacy, an STC rating of 25 is not ideal. If you’re just trying to divide up physical space, this may work for you. A storefront where after-hours security is needed but the products inside are still allowed to be seen using Frameless GlassWall for example.

An STC rating of 55, is where shouting cannot be heard. If you want total quiet/privacy, an STC rating of 55 is great. If you are wanting to divide up physical space and keep those spaces private, this is perfect. Think meeting rooms utilizing operable panels for example.

Listed below are some typical building items and materials to give you an even better idea how the typical operable partition compares.


Who Needs Floor Tracks?

Because of the way our interior movable wall systems are designed and engineered, we don't have the need for floor tracks. Just like you don't have the need to trip and fall, we don't have the need for floor tracks. One of our Hufcor Marketing Product Managers, Rick Woods explains why.

The Science of Sound Part VII: Beating Flanking Paths

The first step to beating flanking paths is to look at how all of the elements work together from floor to roof-the partition, the space between the ceiling and the roof, the floor, even HVAC ductwork can help or hinder flanking paths.

The Science of Sound Part VI: Flanking Paths

Shoddy construction, customary construction practices, or poor installation of the partition can all contribute to the leaks, known as flanking paths.