We are thinking about building are next house with SIPs walls but I have a few reservation. We are located in central NC where it seams is always humid. The house would be ~1800 sqft ranch with a simple rectangular design. Everything I have read about the panels seems great and the ability to get a air tight house with r-27 insulation quickly and easily is very attractive.They offer polyurethane with a few exterior options such as Zip and LP Smartside sheathing, the idea of having the siding already in place seems nice and would speed of the build. My concern has to do with possibility of moisture issues leading to deterioration of OSB and the costly repairs that would involve engineers. Are my concerns valid? Would a panel with siding as the exterior increase the chance of moisture issues. Would a 2×6 design with r-10 exterior be just as quick and cheaper with such a simple house design?
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