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IECC 2009 Wall Insulation

duckbill

Bronze Member
Joined
Dec 8, 2009
Messages
51
Location
PA
IECC 2009, Table 502.2(1), Walls Above Grade, shows Zone 5, under "Wood framed and other" as R-13 + R-3.8. This value does not have "ci" after it as others do for continuous insulation. Can you add these values together and put R-16.8 or better in the stud cavity for compliance?
 
Re: IECC 2009 Wall Insulation

I'd like to think it's an errata. That entry doesn't make sense without the ci. I have a call in to ICC. On the website the errata document shows the same thing without it being changed.
 
Re: IECC 2009 Wall Insulation

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duckbill,



FWIW, in the 2006 IECC, in your listed category, Zones 1 thru 7, no

" ci " is listed either! It is only listed in Zone 8.



Section 501.1 [ in the `06 IECC ] lists the ASHRAE/IESNA Standard

90.1, Energy Standards For Buildings Except For Low-Rise Residential

Buildings as a source to check. You might check this listed standard

to verify / see what is listed vs. the IECC.



Section 502.2.3 [ in the `06 IECC ] states "The minimum thermal

resistance ( R-value ) of the insulating material(s) installed in the wall

cavity between the framing members and continuously on the walls

shall be specified in Table 502.2(1), ..."

* * *
 
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