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<TITLE>Re: [Greenbuilding] Exterior insulation retrofit</TITLE>
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<BODY>Thanks Jason,<br/><br/>We are just above NYC.<br/><br/>I'm hoping to execute this summer so a material that's hard to get scares me...will look into it though.<br/><br/>Bill<hr/><div><b>From: </b> Jason Holstine <jason@amicusgreen.com>
</div><div><b>Sender: </b> Jason Holstine <jason@amicusgreen.com>
</div><div><b>Date: </b>Thu, 28 Apr 2011 10:10:22 -0400</div><div><b>To: </b><bill.allen@verizon.net>; Greenbuilding Listserv<Greenbuilding@lists.bioenergylists.org></div><div><b>Subject: </b>Re: [Greenbuilding] Exterior insulation retrofit</div><div><br/></div>
<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Bill,<BR>
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Where are you located? Depending on availability, consider Roxul ComfortBatt rockwool in the cavity. And on the outside sub the foam for Roxul’s new rigid board products from their commercial lines:<BR>
<a href="http://www.roxul.com/commercial/products/roxul+cavityrock%C2%AE">http://www.roxul.com/commercial/products/roxul+cavityrock%C2%AE</a><BR>
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We’re really high on these products to replace the emboddied costs of foams and the overall performance characteristics of the rockwool. They also have a drainboard for wrapping subgrade foundations. BTW – any feedback or experience from others on these boards?<BR>
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The thing is availability in US is still sketchy. We’re working on picking it up but it’s been a slow process.<BR>
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Otherwise – the trickiest part of your plan is probably the details, corners, joints and connections as you mention.<BR>
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</SPAN></FONT><FONT SIZE="1"><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:9pt'><B>Jason Holstine<BR>
</B></SPAN><SPAN STYLE='font-size:7pt'><IMG src="cid:3386830222_83443352" ><BR>
Amicus Green Building Center<BR>
“Sustain Your Space”<BR>
Member - USGBC, GreenAmerica, NARI, NAHB<BR>
e: <a href="jason@amicusgreen.com">jason@amicusgreen.com</a><BR>
w: www.amicusgreen.com<BR>
p: 301-571-8590<BR>
tf: 866-587-9140<BR>
f: 301-571-8597<BR>
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On 4/28/11 8:45 AM, "<a href="bill.allen@verizon.net">bill.allen@verizon.net</a>" <<a href="bill.allen@verizon.net">bill.allen@verizon.net</a>> wrote:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT SIZE="2"><FONT FACE="Consolas, Courier New, Courier"><SPAN STYLE='font-size:10pt'>Hi all,<BR>
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I am researching a project for my single family home. Classic 1926 stick construction. Zero insulation in the walls...time yet again for an external paint job. Would really appreciate comments on the following plan:<BR>
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We never want to paint again...are thinking of natural cedar shingle siding, maybe with preservative but otherwise left natural. Don't like the embodied energy in the various cement siding solutions....alternatives?<BR>
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While the siding is down, fill the wall cavities with cellulous from the outside.<BR>
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Replace original double hung windows with new construction insulated, R-5 if we can afford it, windows mounted "innie" on the plane of the original dimensional 1x lumber t+g sheathing.<BR>
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Add external insulation....rigid styrofoam. Since there is no interior vapor barrier (plaster on wood lathe), I am worried about the dew point ending up in the center of the wall...therefore, per the building science article, add 4" of styrofoam to the outside to keep the dew point external of the sheathing. <BR>
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Will require careful details at windows and other penetrations.<BR>
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Big job...has anyone done this? Any comments on any part of the above would be most welcomed.<BR>
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Thanks,<BR>
Bill<BR>
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