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OF MINNESOTA <br /> CONSTRUCTION: R-VALUE: <br /> -------------------------- <br /> CEILING SECTION (INSUL. ): <br /> 1) INTERIOR AIR FILM 0.610 <br /> 2) 5/8" DRYWALL 0.450 <br /> 3) 14' BLOWN INSL_ 44.000 <br /> 4). EXT. AIR FILM (STILL) 0.610 <br /> MEE <br /> 4) TOTAL R-VALUE: 45.670 <br /> U = 1/R = 0.022 <br /> VENTED <br /> CEILING FRAMING SECTION: <br /> 1) INTERIOR AIR FILM 0.610 <br /> 5) 2) 5/8" DRYWALL 0.450 <br /> 1) AIR 3) 10-1/2" BLOWN INSL. 38.000 <br /> FLOW 4) EXT. AIR FILM (STILL) 0.610 <br /> 2) 5) 3-1/2" SOFT WOOD 4.380 <br /> TOTAL R-VALUE= 44.050- ! <br /> U = 1/R = 0.023 <br /> D <br />