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<div>Interesting stir up - be interested to hear what the problems you refer to were John</div><div><br></div><div>and my annotation to John's notion is this - </div><div><br></div><div><br></div>My notion is that condensation will not occur at a theoretical dew point location in the wall, <font class="Apple-style-span" color="#FF0000">UNLESS THERE IS AN IMPERVIOUS MATERIAL THERE FOR IT TO FORM ON SUCH AS STEEL OR CONCRETE</font> - but will happen on the back side of the exterior plaster.<br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div><br></div><div><br></div><div><br></div><div>Graeme</div><div>Graeme North Architects</div><div>49 Matthew Road</div><div>RD1</div><div>Warkworth</div><div>tel/fax +64 (0)9 4259305</div><div> </div><div><a href="mailto:graeme@ecodesign.co.nz">graeme@ecodesign.co.nz</a></div><div>www.ecodesign.co.nz</div><br class="Apple-interchange-newline"></span> </div><br><div><div>On 17/06/2009, at 2:44 PM, John Swearingen wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; ">We've only had problems a couple of times, on sides exposed to very hot sunlight, and rather thick steel.<br><br>I don't think condensation presents a significant risk, as the steel's temperature will be very close to the temperature of the surrounding straw. My notion is that condensation will not occur at a theoretical dew point location in the wall, but will happen on the back side of the exterior plaster.<br><br>John "Dewey Eye" Swearingen</span></blockquote></div><br></body></html>