Stress Skin panels are generally used for post and beam construction. 1/2 sheetrock (or t&g pine in some cases), 3 1/2" of high density foam, 1/2" of OSB. You put up the frame and then nail these suckers over the frame. They're extremely efficient (and pretty much air tight).
I've had 2 houses with them now. The negatives are insects love to get inside them and it's almost impossible to get them out, and if you end up with rotted OSB because of a bad shingle or siding job, it's very difficult to repair.
It makes for a pretty fast build... They go up very quick and you you are weather tight as soon as you get windows and roofing installed. Plus your inside is finished too except interior walls.
Wiring has to be carefully done... Most electricians just shake their heads and come up with a very high quote. There are clever ways to do it that the p&b guys have come up with.
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