[Cob] adding lime to floor

[Kindra Welch]

Careful on the "adding lime to an earthen floor mix".  Mixing clay and lime
may result in unknown chemical reactions which create very very weak mixes.
I tried once just throwing in a bit of lime in every batch... which resulted
in the only floor failure I have ever experienced.  Had to dig it out and
redo.  Full lime would be safer.
Make test samples, make test samples :)

Kindra


Date: Mon, 5 Sep 2011 16:33:17 -0500
From: Brian Ziggy <evacindustry at gmail.com>


Hiya all:

I am seeking information regarding earthen floors with a lime content. I'd
like to add some alkaline material to my floor to possibly help stave off
potential mold and mildew growth. The plan is to do an earthen/lime finish
floor, and then tile over it. The lime may be unnecessary, but for some ease
of mind it seems like a worthwhile experiment.

Have you ever added lime to an earthen floor mix? What kind of ratio did you
use?

Thanks in advance.

- ziggy