Designing assemblies requires a balance between acoustic separation and fire protection – both elements are important to prevent owner and builder liability, and more importantly, occupant safety and comfort.

USG Levelrock® Brand products and systems are designed to meet the new International Building Code (IBC) and are the first to ensure that all sound systems are fire-rated and easily specified by a UL Design number. USG Levelrock® floor underlayment systems provide 1- and 2-hour fire-resistance ratings for wood-framed floor/ceiling assemblies and up to 3- and 4-hour ratings for structural concrete assemblies.

For a complete list of UL Designs for USG Levelrock fire and sound systems, see IG1685 Levelrock Fire and Sound Rating Guide. To review the sound test results referenced in IG1685, login to the Applicator Access page.