Vapor barrier for aerated concrete in exterior walls

[LarsDaniel]

I am thinking of insulating partition walls with cellular concrete by filling the 15 cm wide space between the outer panel and the interior wall cladding (wood paneling) with cellular concrete (cement, water, and foam concrete). I am unsure if I should put a vapor-tight plastic film on the backside of the interior wall cladding to prevent moisture from entering the wall and condensing there. The cellular concrete company says there should not be a vapor barrier, so I feel confused. What do you think?
Daniel

 

[RiKr]

Unusual solution this, is there any documentation on it? Example solutions or similar?

 

[LarsDaniel]

Not properly documented as far as I know, but there is similar use for floors. Skanska is said to use the technology also in walls instead of mineral wool in multi-family houses. I do it to reduce problems with rats and mice, which despite good sanitation are insurmountable on the farm after rat poison has been so heavily restricted.