On the old eBuild forum a very good point was raised about the fact that with SIPs your sole plate will be sitting on your foundation wall, so that will be where any moisture in the air condenses... and your wooden sole plate will be sat in the wet, with potential problems.   After a few conversations with my architect about this (and if you stop to think about it, it is a very good point) we are looking at something called Foamglass which is strong enough to build on. It will be inter