Are there any other high temperature insulation blankets that are suitable for dome insulation other than ceramic fiber or CalSil? The shipping costs are what is preventing me from going forward with a purchase right away because I cannot find anything locally. I have spent weeks trying to find an alternative or a nearby supplier and I can't find anything. I know that I can use vermicrete, but was trying to go the easy route in terms of installation as well as just wanting to use a superior product. Any ideas?