[Cob] earthen floors

[sly at riseup.net]

Hello everyone,

I am about to do an earthen floor on a small cottage in spain.  Can I do
it with just clay and sand and not use roadbase?  And do I have to do it
in layers?  I am looking for the easiest way because the floor doesn't
need to be fancy.

I was hoping we could do sand and clay and then seal it with linseed?  And
how toxic are the fumes gassing after of the linseed, would it be
dangerous to sleep in the room for sometime after sealing it with linseed?

Thanks,
Sarah