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[Cob] Lime Plaster FailureBill Wright bill at auburnacupuncture.netMon Feb 27 11:53:01 CST 2017
Hi Kindra, Thanks for your inquiry, and sincere curiosity! Due to the open cracks on my building, and some urgency to get those repaired before more Drought Busting Deluge Winter rains in Northern California this year, I'm going to have to circle back around to answer your questions when I'm able. For now, I'm doing a crash course on lime renders to figure out the best way forward to protect my building; which means. . . To get finaled by the County, and keep more lime-containing plaster from falling off my building. Thankfully my building has a beefy layer of cob over the bales, and the South wall is all cob! The limes.us website, and the, "Using Natural Finishes" Book by Adam Weismann, and Katy Bryce are my new best friends! Onwards! Thanks Again! Bill Bill Wright, L.Ac., DNBAO Wright Acupuncture and Massage 251 Auburn Ravine Rd., Ste. #205 Auburn, CA 95603 530-886-8927 "There is no path to healing, healing is the path" > On Feb 26, 2017, at 9:15 PM, Kindra Welch <kindra at claysandstraw.com> wrote: > > Hi Bill - I love a good mystery! > > I see two types of cracks … vertical and horizontal. > > Both of your vertical cracks appear to me related to hydration of the clay behind the lime plaster. My experience suggests this could be from exposure or could also be from wicking through the stem wall, or perhaps a bit of both. Limewash will heal cracks and protect walls from exposure but could also serve to seal in moisture coming up through the stem wall. How is the drainage around the house? > > The horizontal cracks in the second two photos are a bit more of a mystery. The diagonal line off the lintel log suggests structural issues. Do you have any pre-plaster pics of that wall? Or a photo of the entire elevation? Is there a bond beam in there anywhere? Why do the cracks follow a slight color change in the plaster? > > Kindra > _______________________________________________ > Coblist mailing list > Coblist at deatech.com > http://www.deatech.com/mailman/listinfo/coblist
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