Abstract: The present invention relates to a sound rated floor system for inhibiting sound transmission between floors. The system includes a corrugated steel deck; a first layer of cementitious material or board or sheet applied over the corrugated steel deck; a sound insulation mat or board applied over the first layer; a second layer of cementitious material applied over the sound insulation mat or board. The floor system has an IIC rating of at least 25 and the corrugated steel deck provides at least 50 percent of the ultimate load carrying capacity under static and impact loading of the floor system with a floor deflection of at most 1/360 of the floor span.

Abstract: An acoustic isolation medium configured for placement between a subfloor and a finished floor with a poured underlayment, includes a first layer being a sound reduction mat disposed upon the subfloor, a second layer placed upon the first layer and being one of a sheet of fibrous material and a web of limp mass material with a high internal damping coefficient, and a third layer placed upon the second layer and being the other of a sheet of the fibrous material and a web of the limp mass material.

Abstract: A bracket for use in acoustically isolating a ceiling support grid from a frame member includes a planar body having a grid receiving formation and at least one mounting aperture, and a resilient grommet secured relative to each aperture for acoustically isolating a fastener passing through the aperture into the frame member.

Abstract: A clip for use in acoustically isolating a wallboard support channel from a frame member, the support channel having at least one mounting point, includes a first portion positionable between a first surface of the channel and the frame member, a second portion positionable in contact with a second, opposite surface of the channel, and a bracket connecting said first and second portions. The first and second portions and the bracket each have at least one fastener opening in registry with corresponding openings on the other of the first and second portions such that a fastener passing through the openings and the mounting point is acoustically isolated from the bracket and from the channel.