Beyond the Build

Beyond the Build

If Moisture at the Building Envelope Level Is #1, Managing Noise Control Might Be #2

As we continue to densify, sound control can be a huge challenge. This goes for all types of existing and new construction, and for all types of occupancies. Just like water, sound will infiltrate where one least expects it.

In a recent project, we installed a specialized noise control system to completely separate the framing from the ceiling assembly. The system is a series of spring brackets with rubber grommets. The key word: “Separate.”

A rundown of the layers, from top to bottom:

  • 2× joists attached to the existing bar joists.
  • Isolator brackets, attached to the wood with screws. (They are engineered, and color coded by the expected weight load.)
  • Steel channel attached to the brackets with factory installed set screws.
  • Standard hat channel, screwed to the channel edge.
  • Insulation
  • Sheet rock installed as usual.

The noise and vibration is absorbed by the isolation brackets, and the insulation further deadens the sound transmission. The end result is a value add.

Merrill Stewart Jr.

Merrill Stewart is Founder and CEO of The Stewart/Perry Company, a commercial building contractor based in Birmingham.