Soy based insulation is not as green as you would think. It still uses chemicals as part of the process to "foam" or expand it. Only about 15% at most is used as a filler for the product.
As far as quality, both good and bad reports on this material. But those reports depend upon who your asking. Like regular foam systems, its expensive. However the payback again like foam systems is really good.
Quite often then not manufactures tout Green in order to make people feel comfortable about their product. When in fact, many green products cost the environment more in the process of manufacturing them then they would like you to know.
Look at electrical cars being sold. Everyone thinks they are helping the environment. They forget the coal that is burned to generate the power to charge the batteries.
The Foam system I use is delivered by a CPDS machine. This is simply a two part foam system that reacts when they mix. No heat is applied other then to help heat the tanks in improve the chemical reaction when its cold out. Once we hit 70 degrees the heat get turns off. Much like the larger foam systems. and Soy, its expensive not only to purchase, but the equipment is also on the pricey side.
Thanks Woodbridge E. great information, I will keep in mind when making a decission. The kokoon homes has a steel frame, what type of insulation would be appropiate to maintain coolness/heat for living space and has anti allergenic properties?
If you do not want the high expense of foam, which works great with metal, I would suggest you use EcoSeal http://ecoseal.knaufinsulation.us/ We have used this product with great success. It is more then fiberglass, but less then foam. This should fit your bill nicely.