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  • From: Rob <becida AT comcast.net>
  • To: homestead AT lists.ibiblio.org
  • Subject: [Homestead] Tvo on earth floors (lime in it)
  • Date: Sun, 24 Aug 2008 18:35:21 -0700

In my search for tvo on lime I came across this one.

Rob
becida AT comcast.net
````````````````````````

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Date: Sat, 20 Jun 1998 09:59:45 -0400
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From: tvoivozd <tvoivozd AT roanoke.infi.net>
To: homestead AT listserv.oit.unc.edu
Subject: Re: Earth floors
References: <45cf2b4.358b1605 AT aol.com>
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tvoivozhd>>>most common finish treatment, and the one that produces a
leather-appearance, is several applications of linseed oil---first one mixed with
turpentine for penetration. Many possible additives in the mix. Swearingen
favors psyllium. In Southwest U.S. and Mexica various plant juices are sometimes
incorporated.

Now probably deceased, Jack Bays (Bays Laboratory, Cedaredge, Colorado),
originated many mixtures which were very successful in floors and walls. His
basic formula (Rub-R-Slate) was 12 quarts of asphalt (bitumil) emulsion purchased
from a road-contractor supply house, 8 pounds of cardboard or paper shredded in a
garden-type chipper-shredder hammermill with a half-inch opening screen.

This was mixed with a propellor-mixer in a fifty-five gallon barrel, adding to the
above 12 gallons of clay-water mixture---varying the amount of water depending on
whether ith result was to be sprayed or trowelled on like cake-frosting.

There are three, (four counting calcium sulfate aka gypsum) common earth
stabilizers, i.e., asphalt emulsion, Portland cement, and lime which are used in
the base material of clay/sand dirt floors. Gypsum produces a quicker-setting,
softer material---less resistant to water , though asphalt emulsion added will
provide necessary water-resistance.

Where sawdust is plentiful and cheap it is an alternative to an earthen floor. A
sawdust floor used in South Africa is comprised of two parts sawdust (don't
use
any containing a lot of resin), one and one-half part sand, one part cement
and
one-quarter part lime. It should cure for ten days and then finished with linseed
oil or floor wax. This is as hard and will wear as well as a hardwood floor.

Whatever mix is chosen---make up lots of samples to be tested first---see what the
material looks and feels like, how it resists abrasion, impact and moisture.

Another question I forgot to answer related to a sheet of polyethylene under the
four to six inches of poured and screeded flat clay/sand base material underlying
the subsequently-added finish layer.

It serves three purposes. Blocks infiltration of radon gas, blocks
capillarity
(wicking action), and blocks vapor-transmission. Except in desert areas, humidity
under a finished floor approaches one hundred percent. Room air is, or should be
much lower, and since water vapor tries to equalize pressure, it continually
travels upward through the floor unless a vapor barrier is interposed.





MAMATURTL1 AT aol.com wrote:

> In a message dated 98-06-19 21:13:53 EDT, you write:
>
> << Earth floors do not crack or powder >>
>
> How are they kept smooth and not powdery? I read about the urine and lime,
> but seriously doubt that is done here. What do folks in the US use to keep the
> floor from cracking or powdering?
>
> I appreciate that you included the websites, but currently am using a
> dinosaur processor that only allows me web access if and when it decides :o(
>
> Thanks,
> Beth






  • [Homestead] Tvo on earth floors (lime in it), Rob, 08/24/2008

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