Interesting to me because it likely needs to cure with minimal expansion or at a rate that would allow for expansion only in the direction of the fill.
Also wonder what the thermal properties of the cure are - does it heat up significantly, etc.
I wonder what the insulation properties are. I could see someone heading to the attic and filling all their exterior walls to add to the overall R factor - provided it is better than an air barrier.
Drop a retractable panel over the doors at night.
I’m not the expert on this product. There are some Q&A on the start page. They like hearing from people with scientific knowledge or interest as it help the process.