Hi! Has anyone tried to this or know the best way to go about doing this.
Have an yurt in New Mexico, I would like to use structure to turn into a cob, or wattle and daub style build.
Anything like cob needs to be well protected from damp with a good water resistant base and considerable roof overhangs. You would need to extend your yurt roof or make the new cob walls beneath it significantly smaller in diameter. I have a feeling you would be better off passing the yurt on to someone who wants it and using the proceeds to acquire new roof materials.
If you are in a desert-like part of New Mexico, you might be able to use the yurt roof with minimal overhang.
I have seen this done in California. A cob builder by the name of Bonnie (sorry, don't know her last name) lives in a cobverted yurt structure near Los Olivos. I think they cobbed right over the lattice structure and then built a new roof over it. There were some other rooms built on to it and the roof covered everything. I don't know much details about it, but I do know it is possible.