From http://www.ironandwood.org/
"These photos are of the setup of my SIP walls and roof for my shop
My SIP's are from www.kcpanels.com . I am in Tucson AZ, where KC used to be located, but they recently moved to Animas NM for production reasons.
The panel thickness is 4.5" for the walls (4' wide) and 6.5" for the ceiling (4' wide). The skins are 7/16" OSB. The panels are urethane foam, not styrene, so the R value is greater per inch. They are a little more expensive than Styrene panels but when you do a cost per inch for the R value, add in the extra cost of the 2 x lumber needed, the up cost is negligible. The manufacturing process is very different. Styrene foam is cut to the thickness needed and then 'glued' to the OSB. Whereas the urethane foam is mixed and expands to fill the void between the panels. From people back east that use SIP's, I am told that the adhesion of the urethane is superior to that of the styrene.
Also one thing about KC is that they only charge you for the sq ft used. Others charge you for a full panel even though you have a doorway or window in that panel.
This is a shop. My purpose is to put in the systems I want and get the kinks worked out of them before I build my house. The roof panels are 28' long and there is a support beam running down the center. 13' is the max span Tucson allows without a 2x spline between panels. The crew, boss and 3 workers, took 2 days to do the shop, 24 ft x 32 ft with a 24 ft x 15 ft covered work porch. The porch has a 2x6 roof. The sides and roof are going to be covered in metal, Grandrib by www.Fabral.com, I picked that up yesterday and some friends are coming over tomorrow and we'll put up the roof."
