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CONSTRUCTION R VALUE <br /> CEILING SECTION (INSULATED) <br /> (1) INTERIOR AIR FILM 0.61 <br /> t (2) 5/8" GYPSUM BOARD 0.56 <br /> (3) 12" BLOWN INSULATION 44.00 <br /> �• (4) EXTERIOR AIR FILM (STILL) 0.61 <br /> TOTAL R = 45.78 <br /> U = 1/R = .022 <br /> 1 CEILING FRAMING SECTION: <br /> (1) INTERIOR AIR FILM 0.61 <br /> (2) 5/8" GYPSUM BOARD 0.56 <br /> (3) 8-1/2" BLOWN INSULATION 31.17 <br /> (4) EXTERIOR AIR FILM (STILL) 0.61 <br /> (5) 3-1/2" SOFT WOOD 4.38 <br /> TOTAL R = 37.33 <br /> U = 1/R = .027 <br /> / Q <br /> 1 ice`•'' � <br /> . v <br /> 7 <br />