Andrew
Thanks for your thoughts, some comments :-
– Electrical Faults – The complete steel frame is earthed in several places. So any shorts to live will immediately blow the fuse/Circuit breaker, and thus end any risk…
– Sally – I agree, the total lack of a “drying out phase” is a major plus. A friend just had 3 rooms in their 6 month old house, re-jibbed, re-sealed and re-wallpapered… because of drying out damage.