I do not know how complete this comparison is. Risinger shows pros and cons of each and does not seem to give his opinion on which one is the best:
I keep wondering if anyone has made any of these systems at home. With a hot-wire cutter you could make lego-style pieces of foam board, although I wonder how the rebar is attached. Is using cinder-block-sized pieces easier than using 4x8 sheets?
Imagine me making an 8x8 shed. Two 4x8 sheets in the inside for each wall, two on the outside. Attach and pour concrete.
Of course, pouring concrete would be a challenge. What would I do? Build huge ramps 8" high and push a wheelbarrow up there?
You can buy a spray foam kit. Home Depot gave one to the girl that built one of their sheds. All of the SIPs that I have seen have been between OSB, but when I tried to find someone making their own, I found Raycore, and they use dimensional lumber and foil radiant vapor barriers:
Risinger has a couple of videos about ZIP-Rs and I like the idea of a stick-built building with as much exterior insulation as interior, but the only pricese that I can find are for thin sheets. I do not see the R-rating, but I would not expect much from something hardly thicker than siding:
https://www.homedepot.com/p/Huber-7-...7198/202089190