<html><head></head><body data-blackberry-caret-color="#00a8df" style="background-color: rgb(255, 255, 255); line-height: initial;"><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">There are many situations where that would OK and only a few were it would not so I would not be concerned. Sure 3/4 foil faced would ne a problem but Rockwool works every where and 2" of XPS is pretty darn safe. Yeah no poly would always be better but Canada has a cult of poly and has a hard time showing any solutions without it. </div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br name="BB10" caretmarkerset="INVALID" class="markedForCaretMarkerRemoval"></div> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br style="display:initial"></div> <div style="font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Sent from my BlackBerry 10 smartphone on the Bell network.</div> <table width="100%" style="background-color:white;border-spacing:0px;"> <tbody><tr><td colspan="2" style="font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"> <div id="_persistentHeader" style="border-style: solid none none; border-top-color: rgb(181, 196, 223); border-top-width: 1pt; padding: 3pt 0in 0in; font-family: Tahoma, 'BB Alpha Sans', 'Slate Pro'; font-size: 10pt;"> <div><b>From: </b>Alan Abrams</div><div><b>Sent: </b>Wednesday, April 16, 2014 08:29</div><div><b>To: </b>Green Building</div><div><b>Reply To: </b>Green Building</div><div><b>Subject: </b>Re: [Greenbuilding] CMHC's "Canadian Wood Frame House Construction"</div></div></td></tr></tbody></table><div style="border-style: solid none none; border-top-color: rgb(186, 188, 209); border-top-width: 1pt; font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"></div><br><div id="_originalContent" style=""><div dir="ltr">Re the CMHC booklet:<div><br></div><div>RT-thanks for posting the link. there does seem to be a lack of consistency in the details, however. For example, detail 42 shows some sort of exo-insulation, which could be presumed to be foam (foam is specifically called out for wrapping window openings in other details), whereas in detail 45 poly sheeting is shown as a combined vapor and air barrier. If both these strategies were employed in the same wall, there is the possibility of trapping enough water vapor in the cavity to create problems. Maybe all this is differentiated in the text somewhere; I did not read it carefully--but it still makes me wonder if someone was in a rush to reissue it, without a thorough updating...</div>
<div><br></div><div>AA<br><br> </div></div><div class="gmail_extra"><br clear="all"><div><font><font><span style="color:rgb(102,0,0)">Alan Abrams</span></font><b style="color:rgb(102,0,0)"><br></b><i><span style="color:rgb(102,102,102)">certified professional building designer, AIBD<br>
certified passive house consultant, PHIUS</span></i></font><div><i><span style="color:rgb(102,102,102)">certified passive house builder, PHIUS</span></i><font><span style="color:rgb(102,0,0)"><font color="#666666"><i><br>
</i></font></span><font><span style="color:rgb(102,0,0)">Abrams Design Build LLC</span></font><font size="4"><br style="color:rgb(102,0,0)"><font><i style="color:rgb(102,0,0)">sustainable design for <font>intentional</font> living</i></font></font></font><font style="color:rgb(102,102,102)" size="1"><font><br>
</font></font><font style="color:rgb(102,102,102)" size="1"><font>cell </font></font><font style="color:rgb(102,102,102)" size="1"><font>202-437-8583</font></font><font style="color:rgb(102,102,102)" size="1"><font><br>
<a style="color:rgb(102,102,102)" href="mailto:alan@abramsdesignbuild.com" target="_blank">alan@abramsdesignbuild.com</a><br style="color:rgb(102,102,102)">
<a style="color:rgb(102,102,102)" href="http://www.abramsdesignbuild.com/" target="_blank">www.abramsdesignbuild.com</a></font></font><br></div></div>
<br><br><div class="gmail_quote">On Tue, Apr 15, 2014 at 9:46 PM, George J. Nesbitt <span dir="ltr"><<a href="mailto:george@houseisasystem.com" target="_blank">george@houseisasystem.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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George J. Nesbitt, Environmental Design / Build, Building Performance Contractor, HERS I Verifier & HERS II Rater, GreenPoint Rater new & existing SF & MF, CABEC CEPE (Certified Energy Plans Examiner), Certified Passive House Consultant, BPI Multifamily Analyst, <a href="http://www.houseisasystem.com" target="_blank">www.houseisasystem.com</a>, (510) 655-8532 office, (510) 984-8344 mobile<div class="">
<br>
On 4/15/2014 5:10 PM, Rob Tom wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">
The recent CMHC newsletter included an announcement about the latest edition of the "Canadian Wood Frame House Construction" booklet.<br></div><div class="">
It's a 10.0 MB download and I'm pretty sure it's free, even to Murricans.<br>
<br></div><div class="">
(There's probably a French version available as well)<br>
</div></blockquote>
Is that French-Canadian, or French?;-)<div class="HOEnZb"><div class="h5"><br>
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