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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> PART 3 EXECUTION <br /> 3.01 EXAMINATION <br /> A. Verify that ducts have been tested before applying insulation materials. <br /> B. Verify that surfaces are clean, foreign material removed, and dry. <br /> 3.02 INSTALLATION <br /> A. Install in accordance with manufacturer's instructions. <br /> B. Insulated ducts conveying air below ambient temperature: <br /> 1. Provide insulation with vapor barrier jackets. <br /> 2. Finish with tape and vapor barrier jacket. <br /> C. Ducts Exposed in Mechanical Equipment Rooms or Finished Spaces: Finish with canvas jacket <br /> sized for finish painting or white PVC jacket. <br /> D. Exterior Applications: Provide insulation with vapor barrier jacket. Provide rigid board insulation <br /> and cover with with calked aluminum jacket with seams located on bottom side of horizontal duct <br /> section. <br /> E. External Duct Insulation Application: <br /> 1. Secure insulation with vapor barrier with wires and seal jacket joints with vapor barrier <br /> adhesive or tape to match jacket. <br /> 2. Install without sag on underside of duct. Use adhesive or mechanical fasteners where <br /> necessary to prevent sagging. Lift duct off trapeze hangers and insert spacers. <br /> 3. Stop and point insulation around access doors and damper operators to allow operation <br /> without disturbing wrapping. <br /> 3.03 SCHEDULES <br /> A. All supply, outside air, and return air ductwork shall be completely insulated, unless otherwise <br /> noted on the plans. Insulation shall completely cover flexible connections. Insulation shall be <br /> minimum 3.0 inch thick. <br /> B. All insulation within the building envelope, except in the attic (where applicable), shall have a <br /> minimum R-value of 6.0 based on installed thickness. Any insulation wrap or board installed <br /> outside the building envelope or in an attic, shall have a minimum R-value of 8.0 based on installed <br /> thickness. <br /> C. Exhaust and relief air ductwork does not require insulation, unless otherwise noted on the plans. <br /> END OF SECTION 23 07 13 <br /> PDC Project 18102 DUCT INSULATION 23 07 13 - 3 <br /> 12/17/2018 <br />