Christian McMahon wrote:I don't want to make artificial tadelakt. Where do you go when you don't have the recipe? You have to improvise until you get it right. I don't know any other way than to keep trying.
Ryan Chivers Well... Tadelakt is basically simply a combination of lime, ( I use a good Type S) NHL 2.0 works too. and a crushed marble or limestone aggregate. The marble should be screened in such a way that the biggest pieces just pass a window screen and at least 15% is smaller than 200 mesh. The lime and marble should be mixed 50/50 by volume. The soap can be any simple vegetable based soap. Marius Fabre savon noir is the real deal. You can use " kiss My face" olive oil soap. So that s how to make it. As for to how to do successful tadelakt. Lots of practice!!
Ardilla Esch wrote:
The fats in the soap actually form a chemical complex with the lime in the layers of plaster. It isn't just a coating. So less mobile or non-soponified fats applied to the surface won't do the trick. It is important that the soap be applied after the plaster goes on the wall. If you mix the soap in with the plaster before applying the plaster you will not get good results. The soap does have to be applied before the plaster cures as well.
You shouldn't substitute for non-soponified fats either because that is important to the chemistry that forms the lime-fat complexes. If you tried to apply olive oil instead of olive oil soap - you get something altogether different (a softened, darkened plaster prone to sloughing and going rancid).