Are you "casting perlite before swine?" Ok, bad pun.<div><br></div><div>What I'm still concerned about with perlite is that you can grow things in it. <span class="Apple-style-span" style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; ">This does not seem like a Good Thing. </span><div>
<br></div><div>From the Supreme Perlite FAQ, <i>"</i><span class="Apple-style-span" style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; "><i>It holds moisture and nutrients for assimilation by roots over time." </i></span><span class="Apple-style-span" style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; ">If there was moisture intrusion, would this not create a thermal bridge to nowhere? or Terabithia? or simply give you cold feet? It's given me cold feet, so far.....can you warm them for me?</span><div>
<div><font class="Apple-style-span" face="Verdana, Arial, Helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 12px;"><br></span></font></div><div><font class="Apple-style-span" face="Verdana, Arial, Helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 12px;"><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; font-size: small; "><i>"Errors like straws upon the surface flow: Who would search for pearls must dive below.” </i> John Dryden</span><br>
</span></font><div><div><font class="Apple-style-span" face="Verdana, Arial, Helvetica, sans-serif"><span class="Apple-style-span" style="font-size: 12px;"><br></span></font></div><div><font class="Apple-style-span" face="Verdana, Arial, Helvetica, sans-serif" style="font-size: 12px; ">John </font><font class="sqq" face="arial, helvetica, sans-serif">“Pearly Whites" Swearingen </font></div>
<div><font class="sqq" face="arial, helvetica, sans-serif"></font><font class="Apple-style-span" face="arial, helvetica, sans-serif"><br></font><div><br><div class="gmail_quote">On Tue, Feb 8, 2011 at 7:47 AM, Kelly Lerner <span dir="ltr"><<a href="mailto:klerner@one-world-design.com">klerner@one-world-design.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">Hi all,<div>In an effort to get away from the global warming potential of and fire retardants in rigid insulation, I'm beginning to design with compacted perlite as under-slab insulation in strawbale houses in Spokane, WA (east side of WA - cold winter - 6800 heating degree days, high desert, dry - about 16" rain/year, water table is usually quite low and soils are well drained). </div>
<div><br></div><div>I've found a relatively local source for perlite(Portland) and the costs for R-value are comparable to or less than rigid insulation. I'm installing perlite under the slab and wrapping it up the edge of the slab (on the interior of the stem wall - under the strawbale wall), but I'm having trouble detailing "slab edge insulation" at the door ways. Anyone have any experience or thoughts about the right approach? Contact me on or off list. Thanks!</div>
<div><br></div><div>In case you're wondering about perlite, here's a link: <a href="http://www.perlite.com/faqs.htm" target="_blank">http://www.perlite.com/faqs.htm</a></div><div><br></div><div><br></div><div><div>
<span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div>
Kelly Lerner, Architect</div><div>One World Design Architecture</div><div>509-838-8812</div><div><a href="http://www.one-world-design.com" target="_blank">www.one-world-design.com</a></div><div><br></div><div>Have you read Natural Remodeling for the Not-So-Green House? Available in Bookstores across the Universe. </div>
<div><a href="http://www.naturalremodeling.com" target="_blank">www.naturalremodeling.com</a></div><div><br></div></span><br>
</div>
<br></div></div><br>_______________________________________________<br>
GSBN mailing list<br>
<a href="mailto:GSBN@greenbuilder.com">GSBN@greenbuilder.com</a><br>
<a href="http://greenbuilder.com/mailman/listinfo/GSBN" target="_blank">http://greenbuilder.com/mailman/listinfo/GSBN</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br><font face="'trebuchet ms', sans-serif"><span style="font-size:x-small"><font color="#666666">John Swearingen<br>Skillful Means Design & Construction<br>2550 9th Street Suite 209A<br>
Berkeley, CA 94710<br>510.849.1800 phone<br>510.849.1900 fax<br><br>Web Site: <a href="http://www.skillful-means.com" target="_blank">http://www.skillful-means.com</a><br>Blog: <a href="https://skillfulmeansdesign.wordpress.com" target="_blank">https://skillfulmeansdesign.wordpress.com</a></font></span></font><br>
</div></div></div></div></div></div></div>