Fire
LEVELROCK® brand floor underlayment systems provide 1- and 2-hour fire-resistance ratings for wood-framed floor/ceiling assemblies, and up to 4-hour ratings for precast concrete assemblies.
Fire testing by Underwriters Laboratories (UL) is conducted in compliance with ASTM E119 (Test Methods for Fire Tests of Building Construction and Materials). Levelrock floor underlayments are suitable for use in noncombustible construction.
Sound
Protection from the intrusion of airborne, footfall and other impact sounds starts with floors that reduce the passage of sound. Levelrock floor underlayment systems are tested for their ability to isolate sound from different sources, providing an affordable acoustical solution that can significantly improve the privacy and comfort of any space.
Designing assemblies requires a fine balance between acoustic separation and fire protection - both elements are important to prevent owner and builder liability. Insulation thickness, placement in the cavity, and resilient channel spacing must all conform to the limits specified in the UL design.