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� ' <br /> Ju <br /> Johns Manville <br /> • • �' • • • • • • • <br /> � WINTER DESIGN TEMPERATURES <br /> Mlwvlbn�l hIN <br /> Illv�r hll� <br /> �. o.. w r CITY TEMPERATURE(F) CITY TEMPERATURE IF) <br /> ��a,� <br /> s� <br /> JVinuna ��� Brainerd 20 <br /> o�,�,�a Willir�ar 15� DuluTh Z1�� <br /> o��.��. o,.� <br /> St Cloud 15' Fergus Falls 21° <br /> � ��. Minneapolis 16�� Alexandria 22° <br /> ` Mankato U° Virginia 25° <br /> Rochester 17` Intemational Fa!Is 29° <br /> °�"' •'�� AlbertLea 17° Beinidji 31�� <br /> „��„ Faribault 17' <br /> . <br /> w�.o . <br /> _ �.L <br /> To allow consumers to make fair comparisons and informed decisions,the Federal Trade Commission requires that ali home insulation products be tested and labeletl <br /> in a uniform manner.FTC Trade Regulation Rule Part 460 specifies that all products be rated at 75°F mean temperature. <br /> Although the in place performance of insulation materials may vary due to instailation quality,temperature difference,framing or other factors,fibrous insulation <br /> performance generally improves as attics get coltler.However,at extreme cold temperatures,the performance(R-value)of fiber glass insulation products may start <br /> to decline below the labeled value.This is due to the phenomenon of convection in the attic causing slight air movement through porous cavities within insulation <br /> materials.The extreme temperatures at which this effect occurs varies with product type and manufacturer.For instance,fiber glass batt insulation does not exhibit <br /> a loss of R-value at temperatures normally seen anywhere in the United States. <br /> Blown loose-fill insulation protlucts are more susceptible to convection than batts because the random orientation of the fibers provides less resistance to air flow. <br /> Despite this,only a few areas within the United States reach sustained temperatures cold enough to cause concern.All loose-fill products perform differently. <br /> Johns Manville has extensively tested our attic insulation products at extreme cold temperatures. <br /> Minnesota law requires an insulation product m be designed to provide its stated R-value at winter design temperatures.The chart below shows the additional <br /> amount of Climate Pro insulation needed to attain a desiretl R-value at various winter design temperatures. <br /> ADDITIONAL CLIMATE PRO NEEDED TO ATTAIN R-VALUE <br /> IN EXTREMELY COLD TEMPERATURES <br /> R-38 R_44 WHAT YOU SHOULD KNOW <br /> WINTER DESIGN ABOUT R-VALUES <br /> TEMPEflATURE EXTRA DEPTH EXTRA BAGS PER EXTRA DEPTH EXTHA BAGS PER <br /> INCHES �.000 SQ.FT. INCHES t,000 sn.FT. The chart shows the R-values of this insulation. <br /> -14 to-17�F 1 1.3 % 0 3 R means resistance to heat flow.The higher <br /> -1�i to 22°F 1%z 1.9 3/4 1 the A-value,the greater the insulating power. <br /> -23"F and colder 2Yz 32 2 2 6 Compare insulation R-values before you buy. <br /> R-50 R-60 <br /> WINTER DESIGN To get the marked A-value,it is essential <br /> TEMPERATURE EXTRA DEPTH EXTRA BAGS PER EXTRA DEPTH EXTRA BAGS PER that this insulation be installed f0 2fl Wlth <br /> INCHES 1.000 SQ.FT. INCHES 7,000 SQ.FT. P P y <br /> 14 to 17 F 0 0 � � pneumatic equfpment. <br /> -18 to-22°F 0 0 0 0 <br /> -23`F and colder 1 1.4 0 0 <br /> � <br /> Ju <br /> Johns Manville <br /> Visit our website at specJM.com or call 1-800-654-3103 � Building Insulation Division P.O.Box 5108 � Denver,CO 80217-5108 <br /> BIC-162 4/13 <br />