I am considering a lowcost way of adding another room to my 2-bed/2-bath CBS
(concrete/block/stucco) house. I've looked at the Nostiel pre-fab system,
which appears to be based on polystyrene/aluminum panels and advertises a
cost of $25/foot. Anyone with any experience using this sytem? Looks like
it might fit the bill for me. Any caveats here?