[Cob] Mike .. Dome home

[David Thurman]

http://www.buildnaturally.com/EDucate/Articles/Lime.htm

Nice bit of info on lime plastering. I think that's the approach you may
want to consider. The idea off mixing cement like you want to is like a big
huge no no in the cement world in general construction at least. I won't
say you absolutely cannot but.......
On Jan 14, 2014 2:53 PM, "Mike Creedy" <michael.creedy47 at gmail.com> wrote:

>
> > Hi and good day,
> > I hope this is the right place to post for some advice.
> > My earthbag dome home is above window height. (Engineer approved by the
> way). Eaves are in place. Will be wattle (with bamboo) and daubed. I
> hope... I have ordered an adobe spreader from Nolan. Need the speed and
> penetration.
> > The bags are primarily filled with roadbase and clay soil. I later found
> a supply of clay based soil (about 25%. Clay) and switched to that. A test
> brick got rock hard. So I would like to plaster the outside side and inside
> with a water proof adobe mix. If anybody can recommend a mix that is
> proven, Please let me know. Research is suggesting a less than 5% addition
> of Portland cement with the sand and type S lime. Please suggest ratios?
> North Florida, we get heavy rain and high winds at times.
> > As a backup, I am putting two rows of eaves in, at different heights, to
> enable me to support a sloped Japanese style roof which will completely
> cover the dome if all else fails. .. (Its 20 ft. dia.) Also, I have cut the
> top of the dome off and am putting in a 2:12 flat tin roof... Temporary to
> pass code.
> > Eaves and window awnings:
> > The eaves extend about 30" out from the building and will be adobe on
> bamboo with re-bar pounded into the bags for support. The same for the
> window and door coverings. I assume to use the same mix as the rest of the
> outside wall?
> > Earth floor: compacted roadbase ontop of about 3 to 4" of 11/2" rock.
> Layers of graded soil (clay or not?) and coated with 4 coats of boiled
> linseed oil. I see there is some good discussion about flooring here.
> Please advise regarding putting a plastic covering above the roadbase? I
> will put some Borax down for termite protection. (Above the roadbase.)
> > My website is a year out of date.
> > I appreciate any advice you can offer as this is the most critical stage
> of construction!
> > Many thanks
> > Mike
> >
> > Floridadomehome.com
>
>
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