13330 Amberly Road     PO Box 273    Waverly, NE 68462    402-786-5017 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.