Mowgli Barrio

John C Daley wrote:Mowgli, your plans are good,
I would add a good drain around the slab edge to get rid of moisture.
A wide eave on the roof to protect the walls
A big tank to collect rainwater
You could constructure a floor frame with insulation and build a wooden floor on that.
Where are you building?

Wide eave, drain and rainwater collection are already on the plan.

It's in Portugal

John C Daley wrote:Plastic is a superb product for the application you speak of.
Tell us more about the situation;
- is the soil damp?
- how will you seal the cob so water does not enter?
- Is the slab edge above the ground?

-The climate is seasonally quite wet and hot and dry in the summer
- The cob will be lime rendered
-the slab is about 4 inches above the ground

I'm planning the construction of a cob tiny house. It will be built on a concrete slab that is already in place. I was thinking of having a wooden floor, but from what I understand, there will need to a moisture barrier between that and the concrete.
What are the options for this?
Ideally, I'd like to stay away from plastic if at all possible.
If it is not possible, I need to understand how that would work. as if it is a sheet of plastic material, I'm guessing that the fixings that will attach the floorboards to the concrete will pierce the plastic.
Is that the case? and if so, would that be a problem?

thanks