[Cob] about tiling on earthen floor

[Tys Sniffen]

I'm just going to throw some quick answers/opinions here that might help
clear things up for you a bit.  Others with other experience may have other
opinions.

1. Tiling on an earthen floor in a kitchen.
When we did tiles on top of earthen floor, we did not do it on the finished
floor, but rather on the final subfloor.  The tiles simply were set down on
DRIED, flat, raised-to-the-final-height-minus-the-tile-thickness, rough
earthen floor with the typical stuff from the store - thin set, it's
called.  Then, we did our finished earthen floor up to the same height as
the tiles, so there was no lip.   We've not had any problems with these in
the 7 years of walking on them. (they're in front of all the doors)

2. Tiling in a shower
don't rely on any sort of earthen solution to hold up without real water
barriers.  Look at a tiling book about tiling a shower floor and follow the
correct instructions around a pvc/rubber sheet below the tiles.  You CAN
put this sheet on top of rough, DRY, earthen floor.

3. Linseed Oil
It sounds like you are talking about mixing in the oil INTO the earthen
plaster for the floor.  that is NOT how I understand it to be done, and not
how I did it.  we put down a smooth earthen plaster and when dry, put down
many coats of hot linseed oil.  My floor is not as hard as I would like it,
but it does ok.  Make sure you're clear on this before you start.

4. Sand and Clay content
There's no way for anyone on the internet to judge your clay and sand.  Do
the brick experiments, and every other experiment you can find out about.
Then you'll know.  Take the time to do the experiments. It's worth it.

Tys



On Tue, Oct 30, 2018 at 10:00 AM <coblist-request at deatech.com> wrote:

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>    1. Tile layed over earthen floor (Alessandra Caprara)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 30 Oct 2018 11:36:43 -0300
> From: Alessandra Caprara <lelecaprara at gmail.com>
> To: "coblist at deatech.com" <coblist at deatech.com>
> Subject: [Cob] Tile layed over earthen floor
> Message-ID:
>         <CAOYPeGPwdCjWJor3n6LCQrnt=
> XmN9ZuiWWz1QQ-3vEKPhXsRRw at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Good morning!
> I’ve made a search using “cob tile” words in my email and I was reading all
> messages about it because I am looking for recipes to glue the tiles over
> my tapped earthen floor. I want to do that in my tiny bathroom (1x3m to
> cover - in the shower area we have a bath instaled) and in part of my
> kitchen arround the sink and the wood burning stove. Not only because I am
> concerned about the wet but also with the cleaning issues.
> Well, I’ve found a 1:3 clay sand and lots of linseed oil. Here we have a
> clay with lots of coarse sand and it gave me lots of questions: does have
> the clay here sand enough? Being the sand a coarse and squared shape do I
> have to screen it and mix another tipe of rounded and finer sand? How much
> oil do I need to mix?
> Another question I have is about the mix to fix the tile and to grout the
> tile. I think this question is more about my problems with english
> language. To fix the tile I don’t need to add oil and I must to do it in
> the mix I will use to fill the gaps between the tiles. Is that right?
> Do I need to use a really thin layer to fix the tile? And do I must to wait
> it to dry completely? How do I know it is dry?
> The tapped base floor is dry right now, but we are in the wet season what
> means it’s raining almost every day.
> I’m sorry so many questions. It is my first house I’m doing myself and I am
> only a veterinarian.
>
> Thank you,
> --
> Alessandra Caprara
>
>
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