Building Enclosure Design Considerations with NFPA 285

December 30, 2012
Publication: Journal of Building Enclosure Design (JBED) Summer p 21-23
Author(s): Brian Kuhn Andrew Jeffrey

Abstract: The recent push for increased continuous insulation in exterior walls in concert with the code requirements for NFPA 285 assembly testing of combustible materials in exterior walls has complicated the use of traditionally high-performing materials and assemblies in building enclosure design.  To remain code-compliant, designers must either conform to the details and products of tested assemblies, use non-combustible alternatives, or request a variance from the building official.  This article highlights the design challenges that architects and building enclosure consultants face when trying to reconcile thermal insulation and weatherproofing goals with fire testing requirements. Read more (page 21).