I too am going to build a house using Kachdorian's passive solar concept and would appreciate any thoughts about the design. Our house footprint is an L; we plan to have the solar slab as the foundation for the short leg of the L only. I have also been thinking about using the "faux" slates for shingles which are apparently made from old tires. (I like the idea that they are recycled.) Anyway,I was wondering if anyone has had experience with them on SIPs.
