Our building control inspector came today to take a look at our back wall. We assured him that the cement boards is the final layer with the DPM plastic material sandwiched in as well!
I got the impression that he was expecting the wall to be upright! But he is happy. He will come again when we have got the roof on and tied down! He can then see the structure of the posts and windows etc.
We also talked about the electrics and what form of approval he wanted to see when the electrics are installed.