Division 7 Ebook Page 58 Owens Corning Enclosure Solutions NFPA 285 Design Guide

9 ENCLOSURE SOLUTIONS NFPA 285 Accepted Complete Walls Table 2 For Enclosure Solutions Wall Systems Using COMBUSTIBLE or LOW 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" 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 Exterior Sheathing: Select one Gypsum Sheathing, ", exterior grade Gypsum Sheathing, ", Type X, exterior grade Air & Water Barrier: Select One All air & water barriers are to be installed at recommended application rates and in strict accordance with the manufacturer's installation instructions. Verify vapor resistance properties if required. None Air/water barrier membrane selected from Appendix B and installed on the base wall behind the continuous insulation (CI) Continuous Insulation (CI): 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 Thermafiber Rainbarrier 45, unfaced, minimum 2" thick, mechanically attached per manufacturer's recommendations, continuous over air & weather barrier system if selected Thermafiber Rainbarrier HD, unfaced, minimum 2" thick, mechanically attached per manufacturer's recommendations, continuous over air & weather barrier system if selected

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