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Waterproof Cob (need help ID pics)

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posted 13 years ago

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I'm looking for info on completely waterproof cob for sinks and tubs.

Also, can anyone ID these images? (all I have is an image) Where are they from?

http://pinterest.com/pin/133137732704243216/

http://pinterest.com/pin/27021666483954705/

Both seem to have cob plastered in areas that would (hopefully!) hold water.

Very curious. Any takers?

Jami McBride

gardener

Posts: 1948

Location: PNW Oregon

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posted 13 years ago

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The first is from an Earthship. I don't recognize it as being from one of the three books, but I could have missed it.

The second one I haven't seen before.

There are ways to waterproof cob - it is done the same way cement is with additives.
Also look into Earth cement, but I don't have the link just now.

Luna Faery

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posted 13 years ago

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Thank you for the reply

I have heard something about adding gypsum to earth plasters, but i think that's only water-resistant.

Jorge Villarreal

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posted 13 years ago

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Save the pictures and drag them in to Google search by image. Lots of possibilities come back.

In Google click "images" a camera icon appears... drag the saved picture in to the rectangle. And there you go.

R Scott

pollinator

Posts: 4176

Location: Tennessee 7b

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posted 13 years ago

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I have read something somewhere (long lost to bad memory)

They built their cob sink with broken tile mosaic grouted with regular grout and high-end eco-friendly(ish) grout sealer.

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LaLena MaeRee

Posts: 148

posted 13 years ago

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The earthship can be seen in Garbage Warrior
I know I have seen that sink too, but not sure where, I would try hereFirst Earth Site

Both are great documentaries for anyone interested in natural building, or even not interested in it yet, I have watched them many, many times.

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