Division 22 23 Ebook Page 241 Section 23 07 13 Duct Insulation-QuietR Duct Board Guide Spec

DUCT INSULATION 23 07 13 - 3 Duct Insulation - QuietR Duct Board PART 3 - EXECUTION 3.1 EXAMINATION A. Verify that materials and accessories can be installed in accordance with Contract Documents and material manufacturers' recommendations. B. Verify, by inspecting product labeling, submittal data, and/or certifications which may accompany the shipments, that materials and accessories to be installed on the project comply with applicable specifications and standards and meet specified thermal and physical properties. C. Before starting work under this section, carefully inspect the site and installed work of other trades and verify that such work is complete to the point where installation of materials and accessories under this section can begin. 3.2 SAFETY PRECAUTIONS A. Insulation contractor's employees shall be properly protected during installation of insulation. Protection shall include proper attire when handling and applying insulation materials, and shall include, but not be limited to, disposable dust respirators, gloves, hard hats, and eye protection. 3.3 INSTALLATION A. Install duct systems in accordance with the North American Insulation Manufacturers Association (NAIMA) Fibrous Glass Duct Construction Standards. B. Staple longitudinal and circumferential joints at 2 in o.c. max. C. Seal ducts with one of the following closure methods: 1. Pressure Sensitive Tape: Clean surface prior to applying tape, as recommended by tape manufacturer. Apply pressure sensitive tape firmly and seal with hot iron when ambient temperature is below 50F. 2. Heat-Activated Tape: Clean surface prior to applying tape, as recommended by tape manufacturer. Apply heat-activated tape firmly and seal with hot iron. 3. Mastic and Glass Fabric: Brush mastic onto joint, embed glass fabric in mastic, and brush second coat of mastic over fabric until completely filled. 3.4 FIELD QUALITY ASSURANCE A. Upon completion of insulation work and before operation is to commence, visually inspect the work and verify that it has been correctly installed. B. Open all system dampers and turn on fans to blow all scraps and other loose pieces of material out of the duct system. Allow for a means of removal of such material. C. Check the duct system to ensure that there are no air leaks through joints. 3.5 PROTECTION A. Replace damaged insulation, which cannot be satisfactorily repaired, including insulation with duct liner damage and moisture-saturated insulation.

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