Hushboard® sound-deadening board is normally used in conjunction with 1/2" or 5/8" gypsum board, such as ToughRock® gypsum drywall; or DensArmor Plus® paperless interior drywall.

A conventional 2x4 stud wall using Hushboard and 1/2" gypsum board will achieve a Sound Transmission Class (STC) of 39. That will make loud speech in the next room audible as only a murmur. Premium-construction, sound-isolated walls with Hushboard can deliver STC ratings of 56. Loud speech in the next room would not be audible. Hushboard used with a conventional steel stud wall can help achieve high-quality sound isolation with an STC of 49.

For acoustical test results using Hushboard panels, and more information about how to incorporate the panel in wall systems, download the Hushboard® Sound Deadening Board Brochure (PDF: 364KB/4pgs).