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<DIV dir=ltr align=left><SPAN class=294463517-15102010><FONT color=#0000ff
size=2 face=Arial>Additionally, in the detailed mode you can change the
insulation values to whatever you feel is appropriate for your
situation.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=294463517-15102010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=294463517-15102010>
<DIV align=left>
<DIV align=left><STRONG><EM><FONT color=#0000ff size=6
face="Bradley Hand ITC">David A. Bastow </FONT></EM></STRONG></DIV>
<DIV align=left><STRONG><EM><FONT face="Rockwell Extra Bold">McClure
Engineering, Inc. </FONT></EM></STRONG></DIV>
<DIV align=left> </DIV></DIV></SPAN></DIV>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Nick
Caton<BR><B>Sent:</B> Friday, October 15, 2010 9:58 AM<BR><B>To:</B> Joe Snider;
equest-users@lists.onebuilding.org<BR><B>Subject:</B> Re: [Equest-users] icynene
spray foam<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Icynene is hot stuff because
it’s also an air barrier.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I reckon if you define an
appropriate R-value for your icynene/joist layer and another continuous layer
for anything beyond, you should be able to account for the air barrier seal by
ensuring there’s zero infiltration through that construction. Infiltration
is handled at the space and/or construction levels depending on the method
you’re using to define it… best I can say is to look into
it.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Maybe I’m underthinking it, but
I think that’s all you should need to do to demonstrate a difference against
batt – pay attention to you infiltration inputs.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">~Nick<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><IMG id=Picture_x0020_1
alt=cid:489575314@22072009-0ABB src="cid:294463517@15102010-2708" width=119
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<P class=MsoNormal><B><SPAN
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e">NICK CATON,
E.I.T.</SPAN></B><B><SPAN
style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 12pt"><o:p></o:p></SPAN></B></P>
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<DIV>
<DIV
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Joe
Snider<BR><B>Sent:</B> Friday, October 15, 2010 10:41 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] icynene
spray foam<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Does anyone know how to adjust for icynene spreay foam
insulation in a sealed attic space – closest option seems to be to select R-19
batt on the underside of the roof deck, but this isn’t very accurate because
icynene in a sealed attic provides a significantly better performance than just
R-19 on underside of pitched roof?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Thanks,<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Joe Snider<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #948a54; FONT-SIZE: 8.5pt">---<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
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