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Local building codes, which require fire-safe construction for many building applications, rely on two ratings to evaluate
compliance:
Flame spread rating of material
Fire-resistance rating of a construction assembly
These ratings are based on ASTM standards, and compliance is determined by several independent, nongovernmental testing services
such as Underwriters Laboratories, Inc.
Flame spread and fire-resistance ratings are two separate issues, and they must be addressed independently in selection and
specification. Click here for more information about fire performance.
Selecting the Right UL Fire-Rated Assembly 1. Establish the hourly rating needed to meet code requirements 2. Determine the existing or planned building elements, including structural, mechanical, electrical and finish materials,
in the fire-rated assembly. 3. Refer to UL Fire Resistive Ceiling Assemblies for additional information, or contact TechLine for assistance.
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