12.07.2015 Views

Understanding the UL Fire Resistance Directories - Ron Blank ...

Understanding the UL Fire Resistance Directories - Ron Blank ...

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<strong>Understanding</strong> <strong>UL</strong>Can I add glass fiber insulation to a fire rated partition design when it is notspecified as a component?Q.Can I add glass fiber insulation to a fire rated partitiondesign when it is not specified as a component?A.Yes, ,glass fiber insulation of a thickness not exceeding <strong>the</strong>depth of <strong>the</strong> stud is OK to add to <strong>the</strong> wall stud cavity.Yes for 1 hour rated G500 L500 and P500 series floorYes, for 1-hour rated G500, L500 and P500 series floorceilingassemblies, fiberglass insulation may be added to<strong>the</strong> plenum or joist space above <strong>the</strong> gypsum wallboardprovided an additional layer of gypsum wallboard is addedto <strong>the</strong> assembly.

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