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[Cob] foundations and waterproofingPeter Ellis dukegavin at hotmail.com
Tue Nov 1 05:28:04 PST 2005
So my question is why do you need to waterproof between the foundation and the cob ? Peter Ellis >From: Marlin Nissen <marlin_nissen at yahoo.com> >To: coblist at deatech.com >Subject: RE: [Cob] foundations and waterproofing >Date: Mon, 31 Oct 2005 20:10:20 -0800 (PST) > >Just out there lurking and wanted to muddy the waters (Pun intended).... > >If you're talking about Cob (clay / sand /straw) I WOULD'nt use a >waterproof membrane as that's where moisture will get trapped and do MORE >damage by trapping moisture at that point. Clay has a marvelous way of >absorbing moisture and then releasing it and the condensation/wicking would >come and go, based upon temp/humidity. Instead I think if you're very >worried about moisture getting up into the cob (from especially concrete) >I'd put a good, very sticky layer of mud. > >My rule is always "like with like" i.e. natural substance with natural cob, >not styrofoam, plastic or other unbreathing substances against something >(like cob) that falls apart if it can't breathe. > >My 2 cents, > >Marlin > >Amanda Peck <ap615 at hotmail.com> wrote: > >Never used this for anything, especially not a foundation, but would >something like a brush-on EPDM coating work? between the foundation and the >cob? > >Probably right expensive, but less annoying than putting something with all >your mix on the lower end. Do it once and you're done. These guys swear >that they're world-wide. > >http://www.epdmcoatings.com/ > >Could the same thing be done with asphalt emulsion? That does tend to be >inexpensive. > > >From: Lorraine Z >Topic: Foundations and waterproofing. >What do others do about waterproofing between foundations and >their cob walls? As most cobbers seem to have foundation rocks butting >up into their walls rather than building a flat-topped foundation, it's >not possible to use a waterproof membrane. We've priced commercial >waterproofing solutions for adding into the foundation mix, and this >would be far too expensive for us. Your comments would be much >appreciated. > > > >_______________________________________________ >Coblist mailing list >Coblist at deatech.com >http://www.deatech.com/mailman/listinfo/coblist > > >--------------------------------- > Yahoo! FareChase - Search multiple travel sites in one click. >_______________________________________________ >Coblist mailing list >Coblist at deatech.com >http://www.deatech.com/mailman/listinfo/coblist
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