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• <br /> • <br /> 1 <br /> CEILING WIT[LYENTEP ATTIC suCE ABOVE <br /> R VALUE R. VALUE <br /> / <br /> FRAHING CEILING <br /> 061 AirFilm 0.61 <br /> //,/ 1 1/4. 0 Insulation 44 . 0 <br /> 4 .38 Joist <br /> j 0.55 ceiling Q. �— <br /> I- M ill <br /> Hv7..._ 0.61 AirFilm 0.61 <br /> � � �"2-. c0 TotalR4-51e <br /> .� .01-:" - U a 1/R .OZ-Z-. <br /> 011ge . <br /> Window f i t <br /> nil ration 0.5 cfm/lineal footof crack <br /> Residential door infiltration 0.5 ofm/square foot or door and minimum code <br /> requirement <br /> Non-residential door infiltration 11.0 ofm/lineal foot of crack <br /> Ub 12" concrete block no insulation A .47 R 2. 1 <br /> Ub 12" concrete block insulated cores - .26 R 3. 8 <br /> Ub 12" lightweight block a .32 R 3. 1 <br /> Ub 12" lightweight block insulated cores 4 . 12 R 8 .3 <br /> U single glass - 1.131. with storm window .54 <br /> U double glass - .55 <br /> U triple glass - .41 ' <br /> All exterior walls and ceilings must have a vapor barrier (0. 10 perm max. ) . <br /> Vapor barrier must be on the inside (heated side) of wall. <br /> Vapor barriers of the polyethelene thin film have no R value. <br /> • <br /> • I <br /> • <br /> i <br /> • <br />