<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12px"><DIV>John,</DIV><DIV> </DIV><DIV>I think I have found everything I need to know here:</DIV><DIV> </DIV><DIV><A href="http://www.buildingscience.com/documents/reports/rr-1204-external-insulation-masonry-walls-wood-framed-walls"><SPAN class=misspelled>http</SPAN>://<SPAN class=misspelled>www</SPAN>.<SPAN class=misspelled>buildingscience</SPAN>.<SPAN class=misspelled>com</SPAN>/documents/reports/<SPAN class=misspelled>rr</SPAN>-1204-external-insulation-masonry-walls-wood-framed-walls</A></DIV><DIV> </DIV><DIV>Is there a better report than this one?</DIV><DIV> </DIV><DIV>It seems the only thing this doesn't cover is horizontal <SPAN class=misspelled>firring</SPAN> strips.  My siding will be vertical barn boards and I'm unclear if I can just screw the horizontal <SPAN class=misspelled>firring</SPAN> strips directly to the foam (and <SPAN class=misspelled>thru</SPAN> to the frame) or should I have a layer of vertical <SPAN class=misspelled>firring</SPAN> strips first keeping the horizontal ones off the surface of the foam?</DIV><DIV> </DIV><DIV>Thanks,<BR><SPAN class=misspelled>bil</SPAN></DIV><DIV> </DIV><DIV> </DIV><DIV style="MARGIN: 5px 0px; BORDER-TOP: #bcbcbc 1px solid"></DIV><SPAN style="FONT-FAMILY: arial; COLOR: #000000; FONT-SIZE: 12px">On 11/14/12, <SPAN>John <SPAN class=misspelled>Straube</SPAN><<SPAN class=misspelled>jfstraube</SPAN>@<SPAN class=misspelled>gmail</SPAN>.<SPAN class=misspelled>com</SPAN>></SPAN> wrote:</SPAN><DIV> </DIV><DIV style="FONT-FAMILY: arial; COLOR: #000000; FONT-SIZE: 12px">We have tested up to 8" of foam (EPS, XPS is stronger) with #10 screws and <SPAN class=misspelled>furring</SPAN> strips. Works fine with siding ( safety factor of more than 10). <BR>3/8" lags is crazy: never need it. The foam provides a lot of the strength.<BR>Check our <SPAN class=misspelled>buildingscience</SPAN>.<SPAN class=misspelled>com</SPAN> <SPAN class=misspelled>website</SPAN> or my book for more detail on how this works. <BR><BR>Sent <SPAN class=misspelled>wirelessly</SPAN> from my BlackBerry device on the Bell network.<BR><BR>-----Original Message-----<BR>From: <SPAN class=misspelled>Clarke</SPAN> <SPAN class=misspelled>Olsen</SPAN> <A class=parsedEmail href="mailto:colsen@fairpoint.net" target=_blank><SPAN class=misspelled>colsen</SPAN>@<SPAN class=misspelled>fairpoint</SPAN>.net</A>><BR>Sender: "<SPAN class=misspelled>Greenbuilding</SPAN>" <<SPAN class=misspelled>g</SPAN><A class=parsedEmail href="mailto:reenbuilding-bounces@lists.bioenergylists.org" target=_blank><SPAN class=misspelled>reenbuilding</SPAN>-bounces@lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A>><BR>Date: Wed, 14 <SPAN class=misspelled>Nov</SPAN> 2012 09:50:23 <BR>To: Green Building<<A class=parsedEmail href="mailto:greenbuilding@lists.bioenergylists.org" target=_blank><SPAN class=misspelled>greenbuilding</SPAN>@lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A>><BR>Reply-To: Green Building <<A class=parsedEmail href="mailto:greenbuilding@lists.bioenergylists.org" target=_blank><SPAN class=misspelled>greenbuilding</SPAN>@lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A>><BR>Subject: Re: [<SPAN class=misspelled>Greenbuilding</SPAN>] Insulation fasteners<BR><BR>_______________________________________________<BR><SPAN class=misspelled>Greenbuilding</SPAN> mailing list<BR>to Send a Message to the list, use the email address<BR><A class=parsedEmail href="mailto:Greenbuilding@bioenergylists.org" target=_blank><SPAN class=misspelled>Greenbuilding</SPAN>@<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A><BR><BR>to UNSUBSCRIBE or Change your List Settings use the web page<BR><A class=parsedLink href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org" target=_blank><SPAN class=misspelled>http</SPAN>://lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN>/<SPAN class=misspelled>mailman</SPAN>/<SPAN class=misspelled>listinfo</SPAN>/greenbuilding_lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A><BR>_______________________________________________<BR><SPAN class=misspelled>Greenbuilding</SPAN> mailing list<BR>to Send a Message to the list, use the email address<BR><A class=parsedEmail href="mailto:Greenbuilding@bioenergylists.org" target=_blank><SPAN class=misspelled>Greenbuilding</SPAN>@<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN></A><BR><BR>to UNSUBSCRIBE or Change your List Settings use the web page<BR><A class=parsedLink href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org" target=_blank><SPAN class=misspelled>http</SPAN>://lists.<SPAN class=misspelled>bioenergylists</SPAN>.<SPAN class=misspelled>org</SPAN>/<SPAN class=misspelled>mailman</SPAN>/<SP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