Division 7 Ebook Page 54 Owens Corning Enclosure Solutions NFPA 285 Design Guide

5 ENCLOSURE SOLUTIONS NFPA 285 Accepted Complete Walls Enclosure Solutions Wall Systems Specification Guide for NFPA 285 Compliant Wall Systems NFPA 285 accepted components for Enclosure Solutions Wall Systems are provided in Tables 1 and 2. Table 1 is for systems using high mass non-combustible exterior cladding such as masonry veneer (brick, CMU, stone, etc.), concrete, stucco, terracotta, etc. Table 2 is for systems using combustible or low mass noncombustible exterior cladding such as single skin metal panel, metal composite material (MCM), high density laminate (HDL), etc. The Tables provide information for approved variations including with and without stud cavity insulation, options for different types of Owens Corning continuous insulation, different types and brands of air/weather resistive barriers, critical detailing for head of openings and other important system details. An NFPA 285 compliant Enclosure Solutions Wall System can be identified by selecting options from each component and detail line item in the appropriate table. See Appendix A for approved Owens Corning insulation products, Appendix B for accepted air/water barriers, and Appendix C for accepted construction details. DISCLAIMER: The sole purpose of the information provided in Tables 1, 1a and 2 are to identify certain material options, in assemblies, that have been shown by third party independent testing or engineering analysis, as of the date of this publication, to be compliant with the passing criteria of the NFPA 285 fire test standard. By providing this information, Owens Corning is not making, and specifically disclaims, any recommendations, warranties, or guarantees with respect to any of the listed material options. Complete product data for the Owens Corning products is available in related Owens Corning publications. Product data for non-Owens Corning products, including verification that such products continue to meet the NFPA 285 standards, must be obtained directly from the relevant manufacturer. Table 1 For Enclosure Solutions Wall Systems Using HIGH MASS NON-COMBUSTIBLE EXTERIOR CLADDING Wall Component Material Options Base Wall System: Select one Concrete (cast-in-place or pre-cast) Concrete Masonry Units Steel Stud Framing, minimum 3 " depth, minimum 20 gauge, maximum 16 inches on center spacing, with lateral bracing every 4 ft vertically. Cover on the interior with 1 layer of " thick, Type X, gypsum wallboard. Floorline Firestopping: Select one If a fire resistance rated floor or floor/ceiling assembly IS required use option 1: If a fire resistance rated floor assembly IS NOT required use option 2: 1. Install an ASTM E2307 tested or evaluated perimeter fire containment joint assembly. Thermafiber Safing Insulation Thermafiber Impasse Insulation Hanger System 2. Install a mineral wool fire stop, 4 pcf density, attached with Z-clips or equivalent continuously at each floor line and/or in each stud cavity if the stud framing is continuous past the floor line. Stud Cavity Insulation: Select one Refer to Appendix A for Owens Corning products, properties, sizes, and facer configurations. Complete product data is available in Owens Corning Product Data Sheets at www.ocbuildingspec.com EcoTouch Flame Spread 25 Batt Insulation (faced fiber glass) EcoTouch Batt Insulation (unfaced fiber glass) Thermafiber Ultrabatt (faced or unfaced mineral wool) Any non-combustible insulation (faced or unfaced) Spray Polyurethane Foam, Demilec Sealaction 500 (0.5 pcf maximum, used only with gypsum exterior sheathing) None

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