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2.2 INSULATING MATERIALS <br /> A. General: Provide insulating materials that comply with requirements and with referenced <br /> standards. . <br /> 1. Preformed Units: Sizes to fit applications indicated,selected from manufacturer's <br /> standard thicknesses,widths,and lengths. <br /> B. Extruded Polystyrene Boazd Insulation: Rigid,cellular polystyrene thermal insulation <br /> with closed-cells and integral high density skin,formed by the expansion of polystyrene base resin in an <br /> extrusion process to comply with ASTM C 578 for type indicated;with 5-year aged r-values of 5.4 and 5 <br /> at 40 and 75 deg F(4.4 and 23.9 deg C),respectively;and as follows: <br /> 1. Type N, 1.6 pcf min.density,unless otherwise indicated. <br /> C. Fabric-Faced Extruded Polystyrene Boazd Insulation: Rigid,cellular polystyrene thermal <br /> insulation with closed-cells and integral high density skin,formed by the expansion of polystyrene base <br /> resin in an extrusion process to comply with ASTM C 578 for type indicated;fabricated with tongue and <br /> groove edges and with one side having a matrix of vertical and horizontal drainage channels faced with <br /> manufacturer's standard spunbonded filtration fabric;with 5-year aged r-value of 4.4 at 75 deg F(23.9 <br /> deg C). <br /> 1. Type VI, 1.8 pcf min.density. <br /> D. Molded Polystyrene Board Insulafion: Rigid,cellular thermal insulafion formed by the <br /> e�pansion of polystyrene resin beads or granules in a closed mold to comply with ASTM C 578 for type <br /> indicated;and as follows: <br /> 1. Type VIII, 1.15 pcf min.density,aged r-values of 4.2 and 3.8 at 40 and 75 deg F(4.4 and <br /> 23.9 deg C),respectively. <br /> 2. Surface Burning Characteristics: Maximum flame spread and smoke developed values <br /> of 75 and 450,respectively. <br /> E. Phenolic Board Insulation: Rigid,cellular thermal insulation with thermoset <br /> phenolic-based closed-cell foam core and 2-ply foil-la�aft-iiner facing lazninated to both sides,in board <br /> form complying with ASTM C 1126 for Type II,Grade 1;with r-value of 833 at 75 deg F(23.9 deg C). <br /> 1. Surface Burning Characteristics: Maximum flame spread and smoke developed values <br /> of 25 and 35,respectively. <br /> F. Polyisocyanurate Board Insulation: Rigid,cellulaz thermal insulation with <br /> glass-fiber-reinforced polyisocyanurate closed�ell foam core and aluminum foil facing laminated to both <br /> sides;complying with FS HH-I-1972/1,Class 2;aged r-values of 8 and 7.2 at 40 and 75 deg F(4.4 and <br /> 23.9 deg C),respectively;and as follows: <br /> 1. Surface Burning Characteristics: Maximum flame spread and smoke developed values <br /> _ of 20 and 200,respectively. <br /> G. Cellular Glass Block Insulation: Rigid cellular glass thermal insulation with closed-cell <br /> structure,passing ASTM E 136 for testing of combustion characteristics,in flat or tapered block form <br /> complying with ASTM C 552 for Type I;with r-values of 3.03 and 2.86 at 50 and 75 deg F(10 and 23.9 <br /> deg C),respectively. <br /> 1. Rigid Board: Class 1 and 2,nominal density of 6.0 pcf,r-value of 4.3 at 75 deg F(23.9 <br /> deg C). <br /> H. Unfaced Mineral Fiber BlanketBatt Insulation: Thermal insulation produced by <br /> combining mineral fibers of type described below with thermosetting resins to comply with ASTM C 665 <br /> for Type I(blankets without membrane facing);and as follows: <br /> Page 3 of 6 <br /> . <br />