Werner, thanks for the link.. I was looking at that site yesterday.. I am starting to think that, because the precast concrete panels need to be directly connected to the steel frame, there is no way that I can have both the pre-cast panel and the continuous insulation and moisture barrier as every connection will be a thermal bridge. Furthermore, as you stated, sequencing would be an issue. These two systems seem to counter-act each other. None of the details I have seen, or the engineers I have spoken to, seem to have a solution for this.
I still want to use a concrete product for the core building to achieve that thick, heavy feel. I could look at some type of CMU, as this could tie back into the studs with masonry ties and leave my envelope alone. I am much more familiar with this type of wall system.
Any thoughts??? Anyone??? I think that it could still achieve the same feeling aesthetically, plus it makes for a proven wall system in this part of the world....
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Peter, there are really only two ways to completely avoid cold-bridging: 1. build a (thick) wall from a realively well insulating material (adobe, light-weight concrete masonry, logs, etc.) or 2. build any kind of structure and wrap it in insulation with a chemically fastened (glued) finish material. The later sounds very much like EIFS: exterior insulated finishing system. Both have limitations, especially in humid climates. No matter what system you are using, as long as you are using metal fasteners, you will end up with a certain number of cold bridges. The key is to limit them to a minimum and insulate well where they attach to the basic structure.
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