Orange County NC Website
Browse       Search
Southern Human Services Center Smith Sinnett /2020072 <br />HVAC and Roof Renovations Orange County,North Carolina <br />Duct Insulation 23 07 13 - 5 <br />I.External Duct Wrap 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.Seal vapor barrier penetrations by mechanical fasteners with vapor barrier adhesive. <br />4.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 2.5 inch thick or the thickness required to meet the R-values below. <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 <br />installed thickness. <br />C.Exhaust and Relief Ducts Within ​10 ft​of Exterior Openings or Building Envelope Penetrations: <br />minimum R-value of 6.0 based on installed thickness. <br />END OF SECTION <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6