Division 7 Ebook Page 64 Owens Corning Enclosure Solutions NFPA 285 Design Guide

15 ENCLOSURE SOLUTIONS NFPA 285 Accepted Complete Walls Appendix C: Construction Details for NFPA 285 Compliant Wall Systems Successful NFPA 285 performance is highly dependent on proper detailing around openings (windows, doors, heads, jambs, sills) to ensure that fire and heat does not penetrate into cavity spaces behind the exterior cladding. These details vary depending on the type of insulation used (combustible or non-combustible), the air/water barrier, and the type of cladding (high mass non-combustible, combustible, or low mass non-combustible). The details provided have successfully passed NFPA 285 1 fire evaluation. 2 CAD files can be found at www.owenscorning.com/enclosure. 1 NFPA 285, Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load Bearing Wall Assemblies Containing Combustible Components; National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02169 2 Some details provided have been tested in accordance with NFPA 285, while others have been evaluated and acceptance extended via third party engineering analysis in accordance with ICC-ES Acceptance Criteria for Foam Plastic Insulation (AC 12), Section 6.6. DISCLAIMER: The details provided in Appendix C are schematically correct to ensure proper fire stopping/closure of exterior wall openings. The Architect of Record is responsible for assessing the suitability of each detail for use on a given project and for adapting it accordingly. If questions arise regarding proposed modifications, please contact Owens Corning for consultation. These details are judged to meet the passing criteria of the consensus standard NFPA 285 based on available test data and engineering analysis. However, because actual fire incidents vary greatly, by providing these details, Owens Corning is not making, and specifically disclaims, any recommendations, warranties, or guarantees with respect to performance in an actual fire incident. Appendix C Table of Contents Detail Number FOAMULAR 250 XPS CONTINUOUS INSULATION DETAILS Fluid or Sheet Air Barrier STEEL STUD HEAD 01 FOAMULAR 250 XPS ci with steel angle cavity closure 02 FOAMULAR 250 XPS ci with FRTW blocking & loose angle cavity closure STEEL STUD JAMB 03 FOAMULAR 250 XPS ci with Thermafiber Safing cavity closure 04 FOAMULAR 250 XPS ci with FRTW cavity closure 05 FOAMULAR 250 XPS ci with masonry return cavity closure STEEL STUD SILL 06 FOAMULAR 250 XPS ci with Thermafiber Safing 07 FOAMULAR 250 XPS ci with masonry return & wash cavity closure CMU HEAD 08 FOAMULAR 250 XPS ci with steel angle cavity closure 09 FOAMULAR 250 XPS ci with Thermafiber & loose angle cavity closure CMU JAMB 10 FOAMULAR 250 XPS ci with Thermafiber Safing cavity closure 11 FOAMULAR 250 XPS ci with FRTW blocking cavity closure 12 FOAMULAR 250 XPS ci with masonry return & wash cavity closure CMU SILL 13 FOAMULAR 250 XPS ci with Thermafiber Safing 14 FOAMULAR 250 XPS ci with masonry return & wash cavity closure STUCCO CLADDING 15 FOAMULAR 250 with head backwrap 16 FOAMULAR 250 with jamb backwrap 17 FOAMULAR 250 with sill & wash backwrap FOAMULAR 250 XPS as Air Barrier STEEL STUD HEAD 18 FOAMULAR 250 XPS ci with steel angle cavity closure 19 FOAMULAR 250 XPS ci with FRTW blocking & loose angle cavity closure STEEL STUD JAMB 20 FOAMULAR 250 XPS ci with Thermafiber Safing cavity closure 21 FOAMULAR 250 XPS ci with FRTW cavity closure 22 FOAMULAR 250 XPS ci with masonry return cavity closure STEEL STUD SILL 23 FOAMULAR 250 XPS ci with Thermafiber Safing 24 FOAMULAR 250 XPS ci with masonry return & wash cavity closure

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