Posted By michael0506 on 07/18/2007 6:24 PM
I am very interested in building a SIP home, by myself with the help from my friends and in-laws. I want to do most of the work myself and realy like how easy the SIP's are.
I considered SIPS for the home I'm getting ready to build, but decided to go with ICF blocks. The reason? With SIP you have to buy a lot of labor, i.e. the labor to fabricate the SIP panels, and the labor to set them up. You can't fabricate a SIP panel yourself, and they are large and bulky and you'll need a crane to off load them from a truck and stand them up. A local SIP mfr I talked to admitted the material cost is about 20 - 50% higher than conventional but that is offset by labor savings in erection. You end up being somewhat limited in the amount of DIY labor in the bare walls of the house.
Compare to ICFs. Material cost is less for the blocks. You can instill a lot of DIY labor in stacking them, doing the rebar, etc. You will need to hire a good portion, if not all, the concrete work. Wiring in exterior walls can be done more easily in ICF I would think. Box holes and wiring channels should be put in at the factory for SIPs.
Roof truss installation will the same for either system. You're probably better off to hire someone to fly the trusses and do the roof sheathing.
From that point on, both ICF and SIP would be similar candidates for the amount of DIY labor you can put into the house.
I could be wrong, but this was my conclusion when I was looking at which way to go.