Where in South Australia can I purchase refractory cement or "fondu" as I bellieve it is/was called? I want to create a vermiculite/concrete slab for the base and cover my dome with vermiculite concrete. If I can't buy refractory cement can I use Portland cement with vermiculite (perlite) and if so, will it be prone to cracking?
No announcement yet.
Refractory cement in vermiculite concrete