I have a big pile of half round pieces of calcium silicate good for insulating a wood fired oven. Picked it up from a manufacturer here in Los Angeles for free. I started my building and the day after pouring the slab, found out my wife was being promoted at her business and we are relocating to Florida for a few years. I doubt I will have time or space to build a wood fired oven there, plus the screened in pool area might not be ideal. Free to anyone who wants to come by and pick it up.
Thanks
Brian
Is your calcium silicate still available?