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<div>Frequently, an owner will have a certain “look” in mind, without an understanding of the practical/technical consequences of trying to achieve that look. Few people outside the world of building understand the importance of an air barrier [is it intended
to be internal or external on this building?], and the water resistive barrier; nor the risks to energy performance and building longevity that will result from a “small” crack that would possibly encircle the entire house, if the owner’s plan were implemented
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<div>Ian faces two challenges: to explain the technical problems with the owner’s desired plan, and to help come up with an alternative “look” that is pleasing to the owner, while solving the technical problems. My guess is that the owner might not like
continuous plaster detail as much as he/she imagines. I think it looks better on paper than real life. Perhaps some buildings nearby will serve as examples, some showing the original plan with the inevitable crack, and others that might have a more interesting,
and technically reliable alternative detail. </div>
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<div>Derek</div>
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<div>On 18/11/2014, at 11:38 AM, Bruce EBNet <<a href="mailto:bruce@ecobuildnetwork.org">bruce@ecobuildnetwork.org</a>> wrote:</div>
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There WILL be a crack at that joint. Flash & detail for it, don’t be in denial. Articulate when you cannot hide.<br class="">
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Thanks,</div>
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<div style="margin: 0px; " class="">Bruce “Been hiding out too long” King</div>
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<div class="">On Nov 17, 2014, at 2:26 PM, Ian Smith <<a href="mailto:ian@lopezsmolensengineers.com" class="">ian@lopezsmolensengineers.com</a>> wrote:</div>
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I'm currently helping with the design of a one-story SB house with a rectangular footprint and a simple shed roof. The SB walls will be constructed with a wood bond beam that's in the horizontal plane around the whole perimeter of the house, supported on wood
posts. Prefabricated wood trusses will then bear on top of these beams. The trusses will have a "right triangle" shape to create the shed roof and a flat ceiling on the interior.<br class="">
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On the higher side walls of the trusses, the owner would like to have plaster continue all the way up to the underside of the roof (actually, to the underside of the roof sheathing), with minimal trim/flashing, etc. at the interface/transition between the straw
bales and the plywood.<br class="">
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I've already mentioned to him that there's the possibility that that plaster will crack at this interface (due to the differences in substrate material, plaster thickness, etc), and I've suggested that there be a control joint in the plaster, or a piece of
trim with flashing or something.<br class="">
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I'm just wondering how the rest of you prefer to deal with this detail...<br class="">
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Thanks very much,<br class="">
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<div class="gmail_signature">Boulder, CO, USA<br class="">
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<div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-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: 0px; ">Derek
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