[MEMPHIS91]

Originally Posted by DEnd

Why do you hate the duct work in the attic? If it is insulated you are conditioning the space regardless, and you get conditioned storage space. If it is un-insulated then a well sealed duct system buried in the insulation is a fairly decent system, though you would not want to put any mechanical equipment in there. I agree that it is not the best solution (due to low fault tolerance), but it can be a workable one. I have duct in the attic now. It is a pain to check on and work around in the attic, plus mine wasn't done right so I am biased.

I don't really have anything against SIPs, but their details are not common knowledge. Yes they are fairly simple, but finding people who know how to move the Sips efficiently and safely as well as detail any penetrations they have, and know the tricks of wiring etc... is a lot harder than finding people who are familiar with the details of stick construction. I did some calling around today there are only a few homes that were built with sips in the Oxford area. And those don't look like they were done right. I will either hire a crew or just do them myself.

I would say you need some form of slab insulation regardless. At minimum you need to address the thermal bridge at the outside of the slab. BSC has a few ways to do this: https://buildingscience.com/document...059-slab-happy

Yes thermal bridging at the outside edge is on the list, I got about 4 sites all saying the same info, which is a good thing