Division 7 Ebook Page 50 Owens Corning Enclosure Solutions NFPA 285 Design Guide

1 ENCLOSURE SOLUTIONS NFPA 285 Accepted Complete Walls This brochure provides design guidance for NFPA 285 evaluated wall assemblies and all of the critical details necessary to specify compliant assemblies including: Structural Options: Steel Stud, Concrete, CMU Owens Corning Insulation Options: FOAMULAR XPS, EcoTouch Flame Spread 25 Fiberglas , EcoTouch PINK FIBERGLAS , Thermafiber RainBarrier , Thermafiber Safing, Thermafiber UltraBatt Air/Water Barriers Options: Dozens of accepted products and manufacturers Owens Corning Accessory Options: JointSealR Foam Joint Tape, Thermafiber RainBarrier Clip Exterior Cladding Options: Many including masonry and non-masonry CAD Details: Critical head, jamb, sill and transition details for a variety of insulation and cladding types NFPA 285 Fire Evaluated Wall Assemblies With Owens Corning 2 Enclosure Solutions you now have the design flexibility to cover most any project, of any size, with any exterior cladding, in any climate zone. Owens Corning Enclosure Solutions have successfully passed NFPA 285 1,2 fire evaluation 2 in many variations giving architects complete flexibility in exterior wall design. The systems are approved with FOAMULAR extruded polystyrene continuous insulation under a variety of masonry veneer exterior finishes, or, with non-combustible Thermafiber mineral wool continuous insulation under a variety of non-masonry claddings including metal panels. All of the continuous insulation options can be used over either steel stud frame, concrete, or masonry walls with dozens of alternate air/water resistive barrier products and manufacturers. Owens Corning Enclosure Solutions provide you with the construction industry's most complete portfolio of wall system design options. This brochure summarizes NFPA 285 approved assemblies. See the Specification Guide tables in this brochure and the library of Enclosure Solutions publications for more information. 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 systems specified herein have been tested in accordance with NFPA 285. Some systems 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. The Purpose of NFPA 285 NFPA 285 is required in the International Building Code (IBC) in multiple situations. For example, it is required in many situations when combustible air barriers are used or when foam plastic insulation is used in the exterior walls of construction types I, II, III or IV. These construction types, by code definition, have exterior walls constructed of non-combustible materials. The NFPA 285 test is to determine that combustibles, when exposed to fire on the exterior face of the wall, do not spread flame over the surface or through the core of the otherwise non-combustible wall assembly. The test standard NFPA 285 is referenced in many sections of the IBC including 1403.5 for water resistive barriers, and Section 2603.5.5 for foam plastic insulation. NFPA 285, or a variation of it, has been referenced in each edition of the IBC since its first edition in 2000, and since the 1980's in the three model codes that preceded it. The now defunct ICBO Uniform Building Code first included the concept in the 1988 edition, requiring testing in accordance with the UBC Standard 17-6, a predecessor of NFPA 285.

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