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. <br /> � OONSTRUCTION R VALUE <br /> , - CEILING SECTION (INSUI�ATED) <br /> � (1) INTERIOR AIR FILM 0.61 <br /> 4 (2) 5/8" GYPSiIM BOARD 0.56 <br /> ,,•. (3) 12" BLOWN INSLTL,ATION 44.00 <br /> �• (4) EXTERIOR AIR FILM (STILL) 0.61 <br /> TO'I'AL R = 45.78 <br /> � U = 1/R = .022 <br /> � CEILING FRAMING SECTION: <br /> (1) INTERIOR AIR FTIM 0.61 <br /> (2) 5�8" GYPSUM BOARD 0.56 <br /> (3) 8-1/2" BLC7WN 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 /> / 6 <br /> /.1�. <br /> /� �': <br /> � /� \.` �� <br /> �� �.� , <br /> �� ' . <br /> . , <br /> � <br /> , <br /> �� y1, <br /> � . � � . <br /> .��•.•• �-n.v <br /> , � <br /> � <br />